A grapple in wrestling.

To fasten with a lock, or as with a lock; to make fast; to
prevent free movement of; as, to lock a door, a carriage wheel, a
river, etc.

The barrier or works which confine the water of a stream or
canal.

A device for keeping a wheel from turning.

An inclosure in a canal with gates at each end, used in
raising or lowering boats as they pass from one level to another; –
called also lift lock.

A place from which egress is prevented, as by a lock.

Anything that fastens; specifically, a fastening, as for a
door, a lid, a trunk, a drawer, and the like, in which a bolt is moved
by a key so as to hold or to release the thing fastened.

A tuft of hair; a flock or small quantity of wool, hay, or
other like substance; a tress or ringlet of hair.

A fastening together or interlacing; a closing of one thing
upon another; a state of being fixed or immovable.

That part or apparatus of a firearm by which the charge is
exploded; as, a matchlock, flintlock, percussion lock, etc.