beef:  Like mutton, pork, and veal, beef was introduced by the Normans to provide a dainty alternative to the bare animal names ox, cow, etc when referring to their meat. Anglo-Norman and Old French boef or buef (which of course became modern French boeuf) came from Latin bov-, the stem of bōs ‘ox’, from which English gets bovine  and Bovril . Bōs itself is actually related etymologically to cow. The compound beefeater ‘yeoman warder of the Tower of London’ was coined in the 17th century; it was originally a contemptuous term for a ‘well-fed servant’. => bovine, cow
c. 1300, from Old French buef "ox; beef; ox hide" (11c., Modern French boeuf), from Latin bovem (nominative bos, genitive bovis) "ox, cow," from PIE root *gwou- "cow, ox, bull" (see cow (n.)). Original plural was beeves.
"to complain," slang, 1888, American English, from noun meaning "complaint" (1880s). The noun meaning "argument" is recorded from 1930s. The origin and signification are unclear; perhaps it traces to the common late 19c. complaint of U.S. soldiers about the quantity or quality of beef rations.