[shoot.er] n (13c) 1: one that shoots: as a: a person who fires a missile-discharging device (as a rifle or bow) b: the person who is shooting or whose turn it is to shoot
2: something that is used in shooting: as a: a marble shot from the hand b: revolver--usu. used in combination "six-shooter"
3: a shot of whiskey or whiskey diluted with something (as soda); also: a shot glass containing a bit of food (as a raw oyster)