Celtic

• POS: Adjective, Noun
• HYPHEN: Celt=ic

CIDE DICTIONARY

Celtic, a. [L. Celticus, Gr. Keltiko`s. See Celt.].

 Of or pertaining to the Celts; as, Celtic people, tribes, literature, tongue.  [1913 Webster]

Celtic, n. 

 The language of the Celts.  [1913 Webster]
" The remains of the old Celtic language are found in the Gaelic, the Erse or Irish; the Manx, and the Welsh and its cognate dialects Cornish and Bas Breton."  [1913 Webster]

OXFORD DICTIONARY

Celtic, adj. & n.
--adj. of or relating to the Celts.
--n. a group of languages spoken by Celtic peoples, including Gaelic, Welsh, Cornish, and Breton.

Idiom

Celtic cross a Latin cross with a circle round the centre.

Derivative

Celticism n.

Etymology

L celticus (as CELT) or F celtique