Definitions
1.NounA person using long-range small arms for precise attacks from a concealed position."The sniper shot him in the head."
2.NounA sniper rifle.
3.NounAny attacker using a non-contact weapon against a specific target from a concealed position.
4.NounOne who shoots from a concealed position.
5.NounOne who criticizes; a person who frequently snipes at others.
6.NounA hunter of snipe (the bird).
7.NounA player who specializes in scoring goals."Alexander Ovechkin is often regarded as the greatest sniper of his generation."
8.NounA person or automated process set up by a person who or which attempts to win an online auction by placing a bid only seconds before the auction ends, leaving no time for other bidders to respond