Beef defined.

beef

1.	the flesh of a cow, steer, or bull raised and killed for its meat.

2.	an adult cow, steer, or bull raised for its meat.

3.	Informal. a. brawn; muscular strength. b. strength; power. c. weight, as of a person. d. human flesh.

4.	Slang. a. a complaint. b. an argument or dispute.

–verb (used without object)

5.	Slang. to complain; grumble.

—Verb phrase

6.	beef up, a. to add strength, numbers, force, etc., to; strengthen: During the riots, the nighttime patrol force was beefed up with volunteers. b. to increase or add to: to beef up our fringe benefits.