Thomas Davidson,
Chambers's Twentieth Century Dictionary 1908…
(1908)
“ Castalian, kas-tā′li-an, adj. pertaining to Castalia, a fountain in Parnassus, sacred to Apollo and the Muses. Castanet, kas′ta-net, n. a musical instrument of percussion in the form of two hollow shells of ivory or hard wood, which are bound together by a band fastening on the thumb, and struck by the fingers to produce a trilling sound in keeping with the rhythm of the music—much used in Spain as an accompaniment to dances and guitars. [Sp. castañeta—L. castanea, a chestnut.] ”
