what is the plural of titmouse
titmouse titmouse. n, pl-mice. 1. (Animals) (usually plural) any small active songbird of the family Paridae, esp those of the genus Parus. See tit 1.itmouse. n, pl-mice. 1. (Animals) (usually plural) any small active songbird of the family Paridae, esp those of the genus Parus. See tit 1.