Real Dictionary

break
verb: If you break a part of your body such as your leg, your arm, or your nose, or if a bone breaks, you are injured because a bone cracks or splits.
verb: When an object breaks or when you break it, it suddenly separates into two or more pieces, often because it has been hit or dropped.

break in American English
to cause to come apart by force; split or crack sharply into pieces; smash; burst
intransitive verb: to shatter, burst, or become broken; separate into parts or fragments, esp. suddenly and violently
transitive verb: to smash, split, or divide into parts violently; reduce to pieces or fragments