klez·mer (klěz'mər) n.
pl.klez·mo·rim (klěz'mə-rēm')
A traditionally itinerant Jewish folk musician of eastern Europe performing in a small band, as at weddings.
The Jewish folk music played by small, traditionally itinerant bands.
[Yiddish, from Mishnaic Hebrew kəlê zemer, musical instruments : kəlê, pl. bound form of kəlî, instrument; see kll in Semitic roots + zemer, music, song; see zmr in Semitic roots.]
late 19c. (plural klezmorim); originally, "an itinerant East European Jewish professional musician," from Heb. kley zemer, lit. "vessels of song," thus "musical instruments."