| arch | (noun) (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it | - |
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| (noun) a passageway under a curved masonry construction | Synonyms: archway |
| (noun) a curved bony structure supporting or enclosing organs (especially the inner sides of the feet) | - |
| (noun) a curved shape in the vertical plane that spans an opening | - |
| cornstarch | (noun) starch prepared from the grains of corn; used in cooking as a thickener | Synonyms: cornflour |
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| countermarch | (noun) (military) a march in the reverse direction or back along the same route | - |
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| eparch | (noun) the governor or prefect of an eparchy in ancient Greece | - |
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| (noun) a bishop or metropolitan in charge of an eparchy in the Eastern Church | - |
| ethnarch | (noun) the ruler of a province (as in the Roman Empire and Byzantine Empire) or certain religious rulers with secular authority | - |
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| exarch | (noun) a viceroy who governed a large province in the Roman Empire | - |
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| (noun) a bishop in eastern Christendom who holds a place below a patriarch but above a metropolitan | - |
| (noun) a bishop in one of several Eastern Orthodox Churches in North America | - |
| hierarch | (noun) a senior clergyman and dignitary | Synonyms: archpriest, high priest, prelate, primate |
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| (noun) a person who holds a high position in a hierarchy | - |
| larch | (noun) any of numerous conifers of the genus Larix all having deciduous needlelike leaves | Synonyms: larch tree |
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| (noun) wood of a larch tree | - |
| march | (noun) the act of marching; walking with regular steps (especially in a procession of some kind) | Synonyms: marching |
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| (noun) a steady advance | - |
| (noun) genre of music written for marching | Synonyms: marching music |
| (noun) a procession of people walking together | - |
| (noun) district consisting of the area on either side of a border or boundary of a country or an area | Synonyms: border district, borderland, marchland |
| matriarch | (noun) a female head of a family or tribe | Synonyms: materfamilias |
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| (noun) a feisty older woman with a big bosom (as drawn in cartoons) | - |
| monarch | (noun) large migratory American butterfly having deep orange wings with black and white markings; the larvae feed on milkweed | Synonyms: Danaus plexippus, milkweed butterfly, monarch butterfly |
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| (noun) a nation's ruler or head of state usually by hereditary right | Synonyms: crowned head, sovereign |
| oligarch | (noun) one of the rulers in an oligarchy | - |
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| patriarch | (noun) the male head of family or tribe | Synonyms: paterfamilias |
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| (noun) any of the early biblical characters regarded as fathers of the human race | - |
| (noun) title for the heads of the Eastern Orthodox Churches (in Istanbul and Alexandria and Moscow and Jerusalem) | - |
| (noun) a man who is older and higher in rank than yourself | - |
| research | (noun) systematic investigation to establish facts | - |
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| (noun) a search for knowledge | Synonyms: enquiry, inquiry |
| routemarch | (noun) a long training march for troops | - |
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| search | (noun) the activity of looking thoroughly in order to find something or someone | Synonyms: hunt, hunting |
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| (noun) boarding and inspecting a ship on the high seas | - |
| (noun) an investigation seeking answers | - |
| (noun) the examination of alternative hypotheses | - |
| (noun) an operation that determines whether one or more of a set of items has a specified property | Synonyms: lookup |
| starch | (noun) a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles | Synonyms: amylum |
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| (noun) a commercial preparation of starch that is used to stiffen textile fabrics in laundering | - |
| symposiarch | (noun) the person who proposes toasts and introduces speakers at a banquet | Synonyms: toastmaster |
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