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}.

--Simonds.

   {House car} (Railroad), a freight car with inclosing sides
      and a roof; a box car.

   {House of correction}. See {Correction}.

   {House cricket} (Zo["o]l.), a European cricket ({Gryllus
      domesticus}), which frequently lives in houses, between
      the bricks of chimneys and fireplaces. It is noted for the
      loud chirping or stridulation of the males.

   {House dog}, a dog kept in or about a dwelling house.

   {House finch} (Zo["o]l.), the burion.

   {House flag}, a flag denoting the commercial house to which a
      merchant vessel belongs.

   {House fly} (Zo["o]l.), a common fly (esp. {Musca
      domestica}), which infests houses both in Europe and
      America. Its larva is a maggot which lives in decaying
      substances or excrement, about sink drains, etc.

   {House of God}, a temple or church.

   {House of ill fame}. See {Ill fame} under {Ill}, a.

   {House martin} (Zo["o]l.), a common European swallow
      ({Hirundo urbica}). It has feathered feet, and builds its
      nests of mud against the walls of buildings. Called also
      {house swallow}, and {window martin}.

   {House mouse} (Zo["o]l.), the common mouse ({Mus musculus}).
      

   {House physician}, the resident medical adviser of a hospital
      or other public institution.

   {House snake} (Zo["o]l.), the milk snake.

   {House sparrow} (Zo["o]l.), the common European sparrow
      ({Passer domesticus}). It has recently been introduced
      into America, where it has become very abundant, esp. in
      cities. Called also {thatch sparrow}.

   {House spider} (Zo["o]l.), any spider which habitually lives
      in houses. Among the most common species are {Theridium
      tepidariorum} and {Tegenaria domestica}.

   {House surgeon}, the resident surgeon of a hospital.

   {House wren} (Zo["o]l.), the common wren of the Eastern
      United States ({Troglodytes a["e]don}). It is common about
      houses and in gardens, and is noted for its vivacity, and
      loud musical notes. See {Wren}.

   {Religious house}, a monastery or convent.

   {The White House}, the official residence of the President of
      the United States; -- hence, colloquially, the office of
      President.

Source : WordNet®

Mus musculus
     n : brownish-gray Old World mouse now a common household pest
         worldwide [syn: {house mouse}]