nightingale (n.) Look up nightingale at Dictionary.com
Old English næctigalæ, nihtegale, compound formed in Proto-Germanic (cf. Dutch nachtegaal, German Nachtigall) from *nakht- "night" (see night) + *galon "to sing," related to Old English giellan "yell" (see yell). With parasitic -n- that appeared mid-13c. Dutch nightingale "frog" is attested from 1769. In Japanese, "nightingale floor" is said to be the term for boards that creak when you walk on them.