| helvella | (noun) any fungus of the genus Helvella having the ascocarps stalked or pleated or often in folds | - |
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| isohel | (noun) an isogram connecting points receiving equal amounts of sunshine | - |
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| lampshell | (noun) marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide | Synonyms: brachiopod, lamp shell |
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| lorchel | (noun) a large fungus of the family Helvellaceae | - |
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| mephistophelean | (adjective) showing the cunning or ingenuity or wickedness typical of a devil | Synonyms: devilish, diabolic, diabolical, mephistophelian |
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| mephistophelian | (adjective) showing the cunning or ingenuity or wickedness typical of a devil | Synonyms: devilish, diabolic, diabolical, mephistophelean |
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| mesothelioma | (noun) a form of carcinoma of the mesothelium lining lungs or abdomen or heart; usually associated with exposure to asbestos dust | - |
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| mesothelium | (noun) epithelium originating in the embryonic mesoderm; lines the primordial body cavity | - |
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| moonshell | (noun) marine gastropods having smooth rounded shells that form short spires | Synonyms: moon shell |
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| nepheline | (noun) a whitish mineral consisting of sodium aluminum silicate or potassium aluminum silicate in crystalline form; used in the manufacture of ceramics and enamels | Synonyms: nephelite |
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| nephelinite | (noun) an igneous rock consisting of nepheline and pyroxene | - |
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| nephelite | (noun) a whitish mineral consisting of sodium aluminum silicate or potassium aluminum silicate in crystalline form; used in the manufacture of ceramics and enamels | Synonyms: nepheline |
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| neuroepithelioma | (noun) malignant tumor of the neuroepithelium | - |
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| neuroepithelium | (noun) epithelium associated with special sense organs and containing sensory nerve endings | - |
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| nevertheless | (adverb) despite anything to the contrary (usually preceding a concession) | Synonyms: all the same, at the same time, even so, however, nonetheless, notwithstanding, still, withal, yet |
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| nonetheless | (adverb) despite anything to the contrary (usually preceding a concession) | Synonyms: all the same, at the same time, even so, however, nevertheless, notwithstanding, still, withal, yet |
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| nutshell | (noun) the shell around the kernel of a nut | - |
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| overwhelm | (verb) charge someone with too many tasks | Synonyms: deluge, flood out |
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| (verb) overcome by superior force | Synonyms: overmaster, overpower |
| (verb) cover completely or make imperceptible | Synonyms: drown, submerge |
| (verb) overcome, as with emotions or perceptual stimuli | Synonyms: overcome, overpower, overtake, sweep over, whelm |
| overwhelming | (adjective) very strong; urgently felt | Synonyms: consuming |
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| (adjective) so strong as to be irresistible | Synonyms: overpowering |
| overwhelmingly | (adverb) incapable of being resisted | Synonyms: irresistibly, overpoweringly |
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| parheliacal | (adjective) relating to or resembling a parhelion | Synonyms: parhelic |
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| parhelic | (adjective) relating to or resembling a parhelion | Synonyms: parheliacal |
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| parhelion | (noun) a bright spot on the parhelic circle; caused by diffraction by ice crystals | Synonyms: mock sun, sundog |
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| perihelion | (noun) periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun | - |
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| perithelial | (adjective) of or relating to the tissue layer around small blood vessels | - |
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| perithelium | (noun) tissue layer around small blood vessels | - |
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| phellem | (noun) (botany) outer tissue of bark; a protective layer of dead cells | Synonyms: cork |
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| philhellene | (adjective) characterized by a love of Greece and Grecian things | Synonyms: Graecophile, Graecophilic, philhellenic |
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| (noun) an admirer of Greece and everything Greek | Synonyms: Graecophile, philhellenist |
| philhellenic | (adjective) characterized by a love of Greece and Grecian things | Synonyms: Graecophile, Graecophilic, philhellene |
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| philhellenism | (noun) admiration for Greece and the Greeks and Greek customs | - |
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| philhellenist | (noun) an admirer of Greece and everything Greek | Synonyms: Graecophile, philhellene |
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| photoheliograph | (noun) a telescope, with a camera attached, used to photograph the Sun. | - |
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| platyhelminth | (noun) parasitic or free-living worms having a flattened body | Synonyms: flatworm |
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| rakehell | (noun) a dissolute man in fashionable society | Synonyms: blood, profligate, rake, rip, roue |
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| satchel | (noun) luggage consisting of a small case with a flat bottom and (usually) a shoulder strap | - |
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| schnorchel | (noun) air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time | Synonyms: breather, schnorkel, snorkel, snorkel breather |
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| seashell | (noun) the shell of a marine organism | - |
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| sheldrake | (noun) Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill | - |
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| (noun) large crested fish-eating diving duck having a slender hooked bill with serrated edges | Synonyms: fish duck, merganser, sawbill |
| shelduck | (noun) female sheldrake | - |
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| shelf | (noun) a support that consists of a horizontal surface for holding objects | - |
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| (noun) a projecting ridge on a mountain or submerged under water | Synonyms: ledge |
| shelfful | (noun) the amount that a shelf will hold | - |
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| shelflike | (adjective) resembling a shelf (or considered to resemble a shelf) | - |
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| shelfy | (adjective) full of submerged reefs or sandbanks or shoals | Synonyms: reefy, shelvy, shoaly |
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| shell | (noun) the hard largely calcareous covering of a mollusc or a brachiopod | - |
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| (noun) hard outer covering or case of certain organisms such as arthropods and turtles | Synonyms: carapace, cuticle, shield |
| (noun) ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun | - |
| (noun) a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners) | Synonyms: plate, scale |
| (noun) the housing or outer covering of something | Synonyms: case, casing |
| (noun) a very light narrow racing boat | Synonyms: racing shell |
| (noun) a rigid covering that envelops an object | - |
| (noun) the exterior covering of a bird's egg | Synonyms: eggshell |
| (noun) the hard usually fibrous outer layer of some fruits especially nuts | - |
| (noun) the material that forms the hard outer covering of many animals | - |
| (verb) remove from its shell or outer covering | - |
| (verb) remove the husks from | Synonyms: husk |
| (verb) use explosives on | Synonyms: blast |
| (verb) come out better in a competition, race, or conflict | Synonyms: beat, beat out, crush, trounce, vanquish |
| (verb) hit the pitches of hard and regularly | - |
| (verb) look for and collect shells by the seashore | - |
| (verb) fall out of the pod or husk | - |
| (verb) create by using explosives | Synonyms: blast |
| shellac | (noun) a thin varnish made by dissolving lac in ethanol; used to finish wood | Synonyms: shellac varnish |
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| (noun) lac purified by heating and filtering; usually in thin orange or yellow flakes but sometimes bleached white | - |
| (verb) cover with shellac | Synonyms: shellack |
| shellack | (verb) cover with shellac | Synonyms: shellac |
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| shellbark | (noun) North American hickory having loose grey shaggy bark and edible nuts | Synonyms: Carya ovata, shagbark, shagbark hickory, shellbark hickory |
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| shelled | (adjective) of animals or fruits that have a shell | - |
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| sheller | (noun) a worker who removes shells (as of peas or oysters) | - |
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| shellfire | (noun) shooting artillery shells | - |
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| shellfish | (noun) invertebrate having a soft unsegmented body usually enclosed in a shell | Synonyms: mollusc, mollusk |
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| (noun) meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean) | - |
| shellflower | (noun) showy perennial of marshlands of eastern and central North America having waxy lanceolate leaves and flower with lower part creamy white and upper parts pale pink to deep purple | Synonyms: Chelone glabra, shell-flower, snake-head, snakehead, turtlehead |
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| (noun) cultivated for its shining oblong leaves and arching clusters of white flowers with pink shading and crinkled yellow lips with variegated magenta stripes | Synonyms: Alpinia speciosa, Alpinia Zerumbet, Languas speciosa, shall-flower, shell ginger |
| shelling | (noun) the heavy fire of artillery to saturate an area rather than hit a specific target | Synonyms: barrage, barrage fire, battery, bombardment |
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| shellproof | (adjective) able to resist the explosive force of bombs and shells | Synonyms: bombproof |
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| shelter | (noun) a structure that provides privacy and protection from danger | - |
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| (noun) protective covering that provides protection from the weather | - |
| (noun) temporary housing for homeless or displaced persons | - |
| (noun) a way of organizing business to reduce the taxes it must pay on current earnings | Synonyms: tax shelter |
| (noun) the condition of being protected | Synonyms: protection |
| (verb) invest (money) so that it is not taxable | - |
| (verb) provide shelter for | - |
| shelterbelt | (noun) hedge or fence of trees designed to lessen the force of the wind and reduce erosion | Synonyms: windbreak |
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| sheltered | (adjective) protected from danger or bad weather | - |
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| shelve | (verb) place on a shelf | - |
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| (verb) hold back to a later time | Synonyms: defer, hold over, postpone, prorogue, put off, put over, remit, set back, table |
| shelver | (noun) a worker who puts things (as books) on shelves | - |
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| shelvy | (adjective) full of submerged reefs or sandbanks or shoals | Synonyms: reefy, shelfy, shoaly |
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| thelarche | (noun) the start of breast development in a woman at the beginning of puberty | - |
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| tortoiseshell | (noun) a cat having black and cream-colored and yellowish markings | Synonyms: calico cat, tortoiseshell-cat |
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| (noun) brilliantly colored; larvae feed on nettles | Synonyms: tortoiseshell butterfly |
| (noun) the mottled horny substance of the shell of some turtles | - |
| unhelpful | (adjective) providing no assistance | - |
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| unhelpfully | (adverb) in an unhelpful manner | - |
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| unhelpfulness | (noun) an inability to be helpful | - |
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| unshelled | (adjective) of animals or fruits that have no shell | Synonyms: shell-less |
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| whelk | (noun) large carnivorous marine gastropods of coastal waters and intertidal regions having a strong snail-like shell | - |
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| (noun) large marine snail much used as food in Europe | - |
| (verb) gather whelk | - |
| whelm | (verb) overcome, as with emotions or perceptual stimuli | Synonyms: overcome, overpower, overtake, overwhelm, sweep over |
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| (verb) to neither fail to meet nor exceed expectation | - |
| whelp | (noun) young of any of various canines such as a dog or wolf | Synonyms: pup |
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| (verb) give birth to (a puppy) | Synonyms: pup |
| xanthelasma | (noun) xanthoma of the eyelids; occurs chiefly in the elderly | - |
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