Etymology
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buffalo (n.)

1580s (earlier buffel, 1510s, from French), from Portuguese bufalo "water buffalo," from Medieval Latin bufalus, variant of Latin bubalus "wild ox," from Greek boubalos "buffalo," originally the name of a kind of African antelope, later used of a type of domesticated ox in southern Asia and the Mediterranean lands, a word of uncertain origin. It appears to contain bous "ox, cow" (from PIE root *gwou- "ox, bull, cow"), but this is perhaps a folk-etymology association.

Wrongly applied since 1630s to the American bison. The other Germanic words (Dutch buffel, German Büffel, Danish böffel, etc.) are from French; from Medieval Latin come Russian buivolu, Polish bujwoł, Bulgarian bivol, etc. Buffalo gnat is recorded from 1822. Buffalo chip "dung of the American bison," used for fuel on the U.S. plains, is from 1840.

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oryx (n.)

late 14c., orix, also in Middle English origen, from Latin oryx, from Greek oryx (genitive orygos), an old name of some sort of Libyan and Egyptian antelope with pointed horns, perhaps originally the gazelle; "the digging animal," literally "pick-axe," but according to Beekes this is probably a folk-etymologizing of a borrowed word Used in Greek and Latin bibles to render Hebrew tho, which early English Bibles misidentified as everything from a small hibernating animal or dormouse to a kind of bird like a guinea hen to a wild bull. Now applied to a specific genus of large antelopes of North Africa and Arabia.

Thou shalt eate no abhominacion. These are the beestes which ye shal eate: Oxen, shepe, Goates, Hert, Roo, Bugle, wylde goate, Unicorne, Origen, and Camelion. [Coverdale translation of the Bible, Deuteronomy xiv.5, 1535]
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