clefs / clefts / klephts [klɛfs]
clefs – n. pl of clef – (Music) any of several symbols placed at the beginning of a staff indicating the pitch of the notes written on it
clefts – n. pl. of cleft – 1. a split or fissure; 2. a space or division made by cleaving
klephts – n. pl of klepht (clepht) – a Greek belonging to one of several independent armed, sometimes brigandish communities formed after the Turkish conquest of Greece