Definitions

1. noun

A rare or obsolete word, possibly referring to a type of ancient Greek or Roman musical instrument, although its etymology is unclear.

“Historians are still trying to decipher the meaning of the obscure word ‘celioncus’, which is mentioned in an ancient manuscript.”

2. adjective

Describing something that is rare or obscure, especially in relation to language or literature.

“The professor’s lecture on the celioncus language was met with confusion from the students.”