What type of wound features irregular edges and a crushed floor?

A wound characterized by irregular edges and a crushed floor is known as a laceration. Lacerations occur when the skin is torn or cut due to blunt force trauma, which can lead to jagged, uneven wound edges and damage to the underlying tissues. This type of injury is often the result of an impact with a rough or blunt object, which does not create a clean cut but rather tears the skin and associated structures.

In contrast, an incision is a clean, straight cut usually resulting from a sharp object, with smooth edges. A contusion, or bruise, involves damage to blood vessels under the skin, resulting in discoloration but not typically producing an open wound. A stab wound is defined as a penetrating injury made by a pointed object, usually resulting in a clean hole but not necessarily coarse or ragged edges.

Thus, the defining characteristics of a laceration—irregular edges and a crushed floor—accurately describe the type of wound referred to in the question.