noun, plural mice [mahys] /maɪs/.
verb (used with object), moused, mous·ing.
verb (used without object), moused, mous·ing.
Origin of mouse
noun (maʊs) plural mice (maɪs)
Word Origin for mouse
Old English mus "small rodent," also "muscle of the arm," from Proto-Germanic *mus (cf. Old Norse, Old Frisian, Middle Dutch, Danish, Swedish mus, Dutch muis, German Maus "mouse"), from PIE *mus- (cf. Sanskrit mus "mouse, rat," Old Persian mush "mouse," Old Church Slavonic mysu, Latin mus, Lithuanian muse "mouse," Greek mys "mouse, muscle").
Plural form mice (Old English mys) shows effects of i-mutation. Contrasted with man (n.) from 1620s. Meaning "black eye" (or other discolored lump) is from 1842. Computer sense is from 1965, though applied to other things resembling a mouse in shape since 1750, mainly nautical.
Parturiunt montes, nascetur ridiculus mus [Horace]
"to hunt mice," mid-13c., from mouse (n.). Related: Moused; mousing.
Plural mice (mīs) or mouses
A common device that allows the user to reposition an arrow on their computer screen in order to activate desired applications. The term mouse comes from the appearance of the device, with the cord to the main computer being seen as a tail of sorts.
see play cat and mouse; poor as a churchmouse; quiet as a mouse. Also see under mice.