What is the meaning of Biff?

A sudden, sharp blow or punch.

A wipeout.

To punch or hit.

To discard; to throw out; to throw away.

To wipe out; to faceplant; to fall.

To mess up.

To move quickly.

The sound of a person being punched or hit.

alternative form of bif

a steak

a steak

a steak, a beefsteak

a patty

steak, beefsteak (as a dish)

someone very large and muscular; a beefy guy, a beefcake, a hunk, etc.

Source: wiktionary.org