mouse

Any of numerous small rodents of the families Muridae and Cricetidae, such as the house mouse, characteristically having a pointed snout, small rounded ears, and a long naked or almost hairless tail.

Any of various similar or related animals, such as the jumping mouse, the vole, or the jerboa.

A cowardly or timid person.

A discolored swelling under the eye caused by a blow; a black eye.

A handheld, button-activated input device that when rolled along a flat surface directs an indicator to move correspondingly about a computer screen, allowing the operator to move the indicator freely, as to select operations or manipulate text or graphics.

To hunt mice.

To search furtively for something; prowl.

To hunt for or catch mice.

To watch or pursue something in a sly or insidious manner.