noun.
A short thick piece, as of wood.
noun.
A person or a beast that is small, but thick-set and strong: as, a chunk of a boy; a chunk of a horse.
noun.
A game formerly much played by certain tribes of North American Indians, consisting in rolling a disk of stone along a prepared course, and immediately afterward throwing a stick so as to make it lie as near the stone as possible when the two come to rest. The grounds used for this amusement are known as chunk-yards.
In lumbering, to clear (ground) with an engine or horses of obstructions which cannot be removed by hand.
noun.
Specifically, a range-bred horse of the western United States, suitable for draft purposes, standing 15 hands or over, and weighing from 1,100 to 1,400 pounds.