coalmouse

coalmouse means any of species Periparus ater of small titmouses with a black head; a coaltit. Lexicurio rates it Sui generis — a strength score of 93 out of 100.

Etymology

From Middle English colmose, collemase, from Old English colmāse (“coalmouse”), from Proto-West Germanic *kolamaisā, equivalent to coal + (tit)mouse. Cognate with Saterland Frisian Koolmeeske, Dutch koolmees, German Low German Kohlmeeske, German Kohlmeise.

noun

Any of species Periparus ater of small titmouses with a black head; a coaltit.