Origin: ME bitor < OFr butor < VL *butitaurus < L butio, bittern (< echoic base *bu-) + taurus, small bird that imitates the lowing of oxen, lit., bull: see steer
Origin: prob. < dial. bittering < bitter + -ing
See bittern in American Heritage Dictionary 4
Origin: Alteration (perhaps influenced by tern1)
Origin: of Middle English bitour
Origin: , from Old French butor
Origin: , possibly from Vulgar Latin *buti-taurus
Origin: : Latin būtiō, buzzard
Origin: + Latin taurus, bull (after its cry); see tauro- in Indo-European roots.
Origin: From bitter.
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