Definitions of hock:

noun: tarsal joint of the hind leg of hoofed mammals; corresponds to the human ankle
noun: any of several white wines from the Rhine River valley in Germany (`hock' is British usage)
verb: disable by cutting the hock
verb: leave as a guarantee in return for money
name: A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #9230)