['k?lt?k]
¦ noun a group of languages including Irish, Scottish Gaelic, Welsh, Breton, Manx, and Cornish.
¦ adjective relating to Celtic or to the Celts.
Derivatives
Celticism -s?z(?)m noun
Origin
C16: from L. Celticus (from Celtae 'Celts'), or from Fr. Celtique (from Celte 'Breton').
Usage
In standard English the normal pronunciation of Celt and Celtic is with an initial k- rather than an s-, except in the name of the Glaswegian football club Celtic.