claves
Concise Oxford English Dictionary © 2008 Oxford University Press:
claves /kleɪvz, klɑːvz/
▶plural noun a pair of hardwood sticks used in music to make a hollow sound when struck together.
– origin 1920s: from Latin Amer. Sp., from Sp. clave ‘keystone’, from L. clavis ‘key’.
'claves' also found in these Oxford entries:

