sniper -
A person who carries the professional title of sniper.
sniper -
A person using long-range small arms for precise attacks from a concealed position.
sniper -
Any attacker using a non-contact weapon against a specific target from a concealed position.
Wikipedia
A sniper is a highly trained marksman who shoots targets from concealed positions or distances exceeding the capabilities of regular personnel. Snipers typically have specialized training and distinct high-precision rifles. In addition to marksmanship, military snipers are also trained in camouflage, field craft, infiltration, reconnaissance and observation.
OmegaWiki Dictionary
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sniper A person using long-range small arms for precise attacks from a concealed position.
