plural mice
ˈmaɪs 
1
: a very small animal that has a pointed nose and a long, thin tail
The house was infested with mice and rats.
a field mouse [=a type of mouse that lives in fields]
a house mouse [=a type of mouse that lives in people's houses]
—sometimes used figuratively to refer to a weak, frightened, or quiet personStand up for your rights! What are you—a man or a mouse?!
2
plural also mouses
: a small device that is connected to a computer and that you move with your hand to control the movement of a pointer on the computer screen
He moved the mouse to click on the icon.
(US) a mouse pad = (Brit) a mouse mat [=a small pad that a computer's mouse rests on]
Cite this Entry
“Mouse.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/mouse. Accessed 19 Jun. 2026.
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