any of numerous, widely distributed, small songbirds of the family Paridae, especially of the genus Parus, having soft, thick plumage and a short, stout, conical bill.
Origin: 1275–1325; Middle English tit(e)mose (see tit1); mose,Old English māse titmouse; cognate with German Meise titmouse, Old Norse meis- in meisingr kind of bird; modern mouse by folk etymology
"small, active bird," early 14c., titmose, from tit (2) (expressing something small) + O.E. mase "titmouse," from P.Gmc. *maison (cf. Du. mees, Ger. meise), from adj. *maisa- "little, tiny." Spelling infl. 16c. by unrelated mouse.