gun for hire

NOUN
12 LETTERS · STARTS WITH G

gun for hire is a valid 12-letter word worth 17 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
G2U1N1F4O1R1H4I1R1E1
2 + 1 + 1 + 0 + 4 + 1 + 1 + 0 + 4 + 1 + 1 + 1 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does gun for hire mean?

NOUN · 1 SENSE