British soldier (5)
I believe the answer is:
tommy
'british soldier' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tommy that I've seen before include "Private soldier (slang)" , "Doubtful apostle could be so familiar" , "British soldier (informal)" , "Bread" , "Private in the Army - kind of gun" .)