| astonishment | (noun) the feeling that accompanies something extremely surprising | Synonyms: amazement |
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| bilestone | (noun) a calculus formed in the gall bladder or its ducts | Synonyms: gallstone |
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| bloodstone | (noun) green chalcedony with red spots that resemble blood | Synonyms: heliotrope |
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| bluestone | (noun) bluish-grey sandstone used for paving and building | - |
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| breakstone | (noun) any of various plants of the genus Saxifraga | Synonyms: rockfoil, saxifrage |
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| brimstone | (noun) an old name for sulfur | Synonyms: native sulfur, native sulphur |
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| brownstone | (noun) a row house built of brownstone; reddish brown in color | - |
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| (noun) a reddish brown sandstone; used in buildings | - |
| capstone | (noun) a stone that forms the top of wall or building | Synonyms: copestone, coping stone, stretcher |
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| (noun) a final touch; a crowning achievement; a culmination | Synonyms: copestone, finishing touch |
| chalkstone | (noun) a deposit of urates around a joint or in the external ear; diagnostic of advanced or chronic gout | Synonyms: tophus |
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| cherrystone | (noun) a half-grown quahog | Synonyms: cherrystone clam |
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| (noun) small quahog larger than a littleneck; eaten raw or cooked as in e.g. clams casino | Synonyms: cherrystone clam |
| claystone | (noun) fine-grained rock consisting of compacted clay particles | - |
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| clingstone | (noun) fruit (especially peach) whose flesh adheres strongly to the pit | Synonyms: cling |
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| cobblestone | (noun) rectangular paving stone with curved top; once used to make roads | Synonyms: cobble, sett |
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| copestone | (noun) a stone that forms the top of wall or building | Synonyms: capstone, coping stone, stretcher |
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| (noun) a final touch; a crowning achievement; a culmination | Synonyms: capstone, finishing touch |
| cornerstone | (noun) a stone at the outer corner of two intersecting masonry walls | - |
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| (noun) a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies | - |
| (noun) the fundamental assumptions from which something is begun or developed or calculated or explained | Synonyms: base, basis, foundation, fundament, groundwork |
| curbstone | (noun) a paving stone forming part of a curb | Synonyms: kerbstone |
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| dripstone | (noun) a protective drip that is made of stone | Synonyms: hoodmold, hoodmould |
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| (noun) the form of calcium carbonate found in stalactites and stalagmites | - |
| fieldstone | (noun) stone that occurs naturally in fields; often used as building material | - |
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| firestone | (noun) a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns | - |
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| (noun) a piece of flint that is struck to light a fire | - |
| flagstone | (noun) stratified stone that splits into pieces suitable as paving stones | Synonyms: flag |
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| flintstone | (noun) pebbles of flint used in masonry construction | - |
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| freestone | (noun) fruit (especially peach) whose flesh does not adhere to the pit | - |
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| gallstone | (noun) a calculus formed in the gall bladder or its ducts | Synonyms: bilestone |
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| gemstone | (noun) a crystalline rock that can be cut and polished for jewelry | Synonyms: gem, stone |
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| goldstone | (noun) aventurine spangled densely with fine gold-colored particles | - |
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| gravestone | (noun) a stone that is used to mark a grave | Synonyms: headstone, tombstone |
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| grindstone | (noun) a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools | - |
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| gritstone | (noun) a hard coarse-grained siliceous sandstone | Synonyms: grit, gritrock |
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| haematohiston | (noun) a colorless protein obtained by removing heme from hemoglobin; the oxygen carrying compound in red blood cells | Synonyms: globin, hematohiston |
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| hailstone | (noun) small pellet of ice that falls during a hailstorm | - |
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| headstone | (noun) the central building block at the top of an arch or vault | Synonyms: key, keystone |
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| (noun) a stone that is used to mark a grave | Synonyms: gravestone, tombstone |
| hearthstone | (noun) a stone that forms a hearth | - |
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| hematohiston | (noun) a colorless protein obtained by removing heme from hemoglobin; the oxygen carrying compound in red blood cells | Synonyms: globin, haematohiston |
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| histone | (noun) a simple protein containing mainly basic amino acids; present in cell nuclei in association with nucleic acids | - |
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| holystone | (noun) a soft sandstone used for scrubbing the decks of a ship | - |
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| hornstone | (noun) a fine-grained metamorphic rock formed by the action of heat on clay rocks | Synonyms: hornfels |
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| jackstones | (noun) a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball | Synonyms: jacks, knucklebones |
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| (noun) game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks | Synonyms: jack |
| jadestone | (noun) a semiprecious gemstone that takes a high polish; is usually green but sometimes whitish; consists of jadeite or nephrite | Synonyms: jade |
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| kerbstone | (noun) a paving stone forming part of a curb | Synonyms: curbstone |
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| keystone | (noun) the central building block at the top of an arch or vault | Synonyms: headstone, key |
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| (noun) a central cohesive source of support and stability | Synonyms: anchor, backbone, linchpin, lynchpin, mainstay |
| limestone | (noun) a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals | - |
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| loadstone | (noun) a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically | Synonyms: lodestone |
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| lodestone | (noun) a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically | Synonyms: loadstone |
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| marlstone | (noun) metamorphic rock with approximately the same composition as marl | Synonyms: marlite |
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| mearstone | (noun) an old term for a landmark that consisted of a pile of stones surmounted by an upright slab | Synonyms: meerestone, merestone |
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| meerestone | (noun) an old term for a landmark that consisted of a pile of stones surmounted by an upright slab | Synonyms: mearstone, merestone |
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| merestone | (noun) an old term for a landmark that consisted of a pile of stones surmounted by an upright slab | Synonyms: mearstone, meerestone |
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| mifepristone | (noun) an abortion-inducing drug (trade name RU 486) developed in France; when taken during the first five weeks of pregnancy it blocks the action of progesterone so that the uterus sloughs off the embryo | Synonyms: abortion pill, RU 486 |
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| milestone | (noun) stone post at side of a road to show distances | Synonyms: milepost |
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| (noun) a significant event in your life (or in a project) | - |
| millstone | (noun) one of a pair of heavy flat disk-shaped stones that are rotated against one another to grind the grain | - |
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| (noun) any load that is difficult to carry | - |
| (noun) (figurative) something that hinders or handicaps | Synonyms: albatross |
| moonstone | (noun) a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar | - |
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| oilstone | (noun) a whetstone for use with oil | - |
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| phlogiston | (noun) a hypothetical substance once believed to be present in all combustible materials and to be released during burning | - |
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| piston | (noun) mechanical device that has a plunging or thrusting motion | Synonyms: plunger |
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| pistonphone | (noun) an acoustical calibrator (sound source) that uses a closed coupling volume to generate a precise sound pressure for the calibration of measurement microphones. | - |
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| pitchstone | (noun) dark acid granitic glass | - |
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| rhinestone | (noun) an imitation diamond made from rock crystal or glass or paste | - |
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| rottenstone | (noun) a weathered and decomposed siliceous limestone; in powdered form it is used in polishing | Synonyms: tripoli |
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| sandstone | (noun) a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.) | - |
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| siltstone | (noun) a fine-grained sandstone of consolidated silt | - |
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| soapstone | (noun) a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments | Synonyms: soap-rock, soaprock, steatite |
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| stone | (noun) building material consisting of a piece of rock hewn in a definite shape for a special purpose | - |
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| (noun) a lack of feeling or expression or movement | - |
| (noun) a lump or mass of hard consolidated mineral matter | Synonyms: rock |
| (noun) the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed | Synonyms: endocarp, pit |
| (noun) an avoirdupois unit used to measure the weight of a human body; equal to 14 pounds | - |
| (noun) material consisting of the aggregate of minerals like those making up the Earth's crust | Synonyms: rock |
| (noun) a crystalline rock that can be cut and polished for jewelry | Synonyms: gem, gemstone |
| stonechat | (noun) common European chat with black plumage and a reddish-brown breast | Synonyms: Saxicola torquata |
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| stonecress | (noun) any Old World herb of the genus Aethionema; native of sunny limestone habitats | Synonyms: stone cress |
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| stonecrop | (noun) any of various northern temperate plants of the genus Sedum having fleshy leaves and red or yellow or white flowers | - |
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| stonecutter | (noun) someone who cuts or carves stone | Synonyms: cutter |
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| stoneface | (noun) any plant of the genus Lithops native to Africa having solitary yellow or white flowers and thick leaves that resemble stones | Synonyms: flowering stone, lithops, living stone, stone-face, stone life face, stone plant |
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| stonefish | (noun) venomous tropical marine fish resembling a piece of rock | Synonyms: Synanceja verrucosa |
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| stonefly | (noun) primitive winged insect with a flattened body; used as bait by fishermen; aquatic gilled larvae are carnivorous and live beneath stones | Synonyms: plecopteran, stone fly |
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| stonemason | (noun) a craftsman who works with stone or brick | Synonyms: mason |
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| stoner | (noun) an attacker who pelts the victim with stones (especially with intent to kill) | Synonyms: lapidator |
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| stoneroot | (noun) erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States | Synonyms: Collinsonia canadensis, horse balm, horseweed, richweed, stone-root, stone root |
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| stonewaller | (noun) one who stonewalls or refuses to answer or cooperate; someone who delays by lengthy speeches etc. | - |
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| stonewalling | (noun) stalling or delaying especially by refusing to answer questions or cooperate | - |
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| stoneware | (noun) ceramic ware that is fired in high heat and vitrified and nonporous | - |
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| stonework | (noun) masonry done with stone | - |
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| stonewort | (noun) any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits | - |
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| stoning | (noun) the act of pelting with stones; punishment inflicted by throwing stones at the victim (even unto death) | Synonyms: lapidation |
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| sunstone | (noun) a translucent quartz spangled with bits of mica or other minerals | Synonyms: aventurine |
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| tombstone | (noun) a stone that is used to mark a grave | Synonyms: gravestone, headstone |
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| touchstone | (noun) a basis for comparison; a reference point against which other things can be evaluated | Synonyms: criterion, measure, standard |
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| turnstone | (noun) migratory shorebirds of the plover family that turn over stones in searching for food | - |
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| whetstone | (noun) a flat stone for sharpening edged tools or knives | - |
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| whinstone | (noun) any of various hard colored rocks (especially rocks consisting of chert or basalt) | Synonyms: whin |
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| wollastonite | (noun) a white or greyish mineral typically found in metamorphic limestone; a silicate of calcium | - |
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