mouse

nouns

any of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender usually hairless tails
is derived from
is derived from
is a type of (narrower)
relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
a swollen bruise caused by a blow to the eye
person who is quiet or timid
is derived from
is derived from
is a type of (narrower)
a human being
"there was too much for one person to do"
a hand-operated electronic device that controls the coordinates of a cursor on your computer screen as you move it around on a pad; on the bottom of the device is a ball that rolls on the surface of the pad
"a mouse takes much more room than a trackball"

verbs

to go stealthily or furtively
"..stead of sneaking around spying on the neighbor's house"
manipulate the mouse of a computer
is a type of (narrower)
hold something in one's hands and move it