Girl on course somewhere in Ireland (6)
I believe the answer is:
'in ireland' is the definition.
(I know that Galway is a county of Ireland)
'girl on course somewhere' is the wordplay.
'girl' becomes 'gal' (synonyms).
'on' says to put letters next to each other.
'course somewhere' becomes 'way' (way is a kind of course. I am not sure about the 'somewhere' bit.).
Can you help me to learn more?
(Other definitions for galway that I've seen before include "flautist" , "Western City of the Tribes" , "part of Ireland" , "Irish city" , "County of W. Ireland" .)