1. A cat that catches mice.

2. One who pries about on the lookout for something.

MOUSETAIL
Mouse"tail`, n. (Bot.)

Defn: A genus of ranunculaceous plants (Myosurus), in which the prolonged receptacle is covered with imbricating achenes, and so resembles the tail of a mouse.

MOUSIE
Mous"ie, n.

Defn: Diminutive for Mouse. Burns.

MOUSING
Mous"ing, a.

Defn: Impertinently inquisitive; prying; meddlesome. "Mousing saints." L'Estrange.

MOUSING
Mous"ing, n.

1. The act of hunting mice.