Mouse \Mouse\, v. i. [imp. & p. p. Moused; p. pr. & vb. n. Mousing.]

1. To watch for and catch mice.

2. To watch for or pursue anything in a sly manner; to pry about, on the lookout for something.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Mouse \Mouse\ (mous), n.; pl. Mice (m[imac]s). [OE. mous, mus, AS. m[=u]s, pl. m[=y]s; akin to D. muis, G. maus, OHG. & Icel. m[=u]s, Dan. muus, Sw. mus, Russ. muishe, L. mus, Gr. my^s, Skr. m[=u]sh mouse, mush to steal. [root]277. Cf. Muscle, Musk.]

1. (Zo["o]l.) Any one of numerous species of small rodents belonging to the genus Mus and various related genera of the family Murid[ae]. The common house mouse (Mus musculus) is found in nearly all countries. The American white-footed, or deer, mouse (Hesperomys leucopus) sometimes lives in houses. See Dormouse, Meadow mouse, under Meadow, and Harvest mouse, under Harvest.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Mouse \Mouse\, v. t.

1. To tear, as a cat devours a mouse. [Obs.]

``[Death] mousing the flesh of men.'' --Shak.

2. (Naut.) To furnish with a mouse; to secure by means of a mousing. See Mouse, n., 2.

Source: Webster's Revised Unabridged Dictionary (1913)