1. The act of breaking something; especially, a bone.
2. A break, a split, or a crack in an object or some form of material.
3. A split or division in something; such as, a system, organization, or agreement.
4. In geology, a break in a rock or mineral, across which there is a separation.

1. To cause to break: "When Melvin slipped on the ice, he fractured a leg bone."
2. To disrupt or to destroy as if by breaking: "
3. To abuse or to misuse flagrantly, as by violating rules: "There are some writers who fracture the language in their books."

Physical injury that is sufficient to break the bone of the upper arm or forelimb that are forming joints at the shoulder and the elbow: If the fracture of the humerus is at the upper end, the arm is on a wire splint for about four weeks.

Usually movements of the fracture of the humerus at the elbow and wrist are started early, and active conditions of the shoulder will begin in about three weeks.