[1] : The Collaborative International Dictionary of English v.0.48

gael \gael\, n.sing.  pl. see gaelic. ethnol.
   a celt or the celts of the scotch highlands or of ireland;
   now esp., a scotch highlander of celtic origin.
   1913 webster
see also:
gaelic 

[2] : WordNet (r) 2.0

gael
     n : a gaelic-speaking celt in ireland or scotland or the isle of
         man

Gael >> G Words
Gael, definition of term: Gael
gael_pag1.html