Webster's Revised Unabridged Dictionary · 1913

Beef

Beef (bēf) , noun

[Old English boef, befe, beef, Old French boef, buef, French boef, from Latin bos, bovis, ox; akin to Greek boy^s, Sanskrit cow, and English cow. See 2d Cow.]

[In this, which is the original sense, the word has a plural, beeves (bēvz).]

1.
An animal of the genus Bos, especially the common species, Bos taurus, including the bull, cow, and ox, in their full grown state; esp., an ox or cow fattened for food.
A herd of beeves, fair oxen and fair kine. — Milton

[In this sense, the word has no plural.]

2.
The flesh of an ox, or cow, or of any adult bovine animal, when slaughtered for food.
Great meals of beef. — Shakespeare
3.
Applied colloquially to human flesh.

Beef (bēf) , adjective

Of, pertaining to, or resembling, beef.
Collocations (1)
Beef tea , essence of beef, or strong beef broth.