Sniper meaning : A person using long-range small arms for precise attacks from a concealed position. Any attacker using a non-contact weapon against a specific target from a concealed position. One who shoots from a concealed position. One who criticizes. (ice hockey slang) A player who specializes in scoring goals. A 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