of something having a drab pale brown color resembling a mouse; "a mousy brownish-grey color"; "mousy hair"; "mouse- colored hair" Synonym(s):mousy, mousey, mouse-colored, mouselike
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Mousy \Mous"y\, a.
Infested with mice; smelling of mice.