Sniper

noun, plural snipes (especially collectively) snipe for 1, 2.
1.
any of several long-billed game birds of the genera Gallinago (Capella) and Limnocryptes, inhabiting marshy areas, as G. gallinago (common snipe) of Eurasia and North America, having barred and striped white, brown, and black plumage.
2.
any of several other long-billed birds, as some sandpipers.
3.
a shot, usually from a hidden position.
verb (used without object), sniped, sniping.
4.
to shoot or hunt snipe.
5.
to shoot at individuals as opportunity offers from a concealed or distant position:
The enemy was sniping from the roofs.
6.
to attack a person or a person’s work with petulant or snide criticism, especially anonymously or from a safe distance.
noun
1.
a rifleman who fires from a concealed place, esp a military marksman who fires from cover usually at long ranges at individual enemy soldiers
noun (pl) snipe, snipes
1.
any of various birds of the genus Gallinago (or Capella) and related genera, such as G. gallinago (common or Wilson’s snipe), of marshes and river banks, having a long straight bill: family Scolopacidae (sandpipers, etc), order Charadriiformes
2.
any of various similar related birds, such as certain sandpipers and curlews
3.
a shot, esp a gunshot, fired from a place of concealment
verb
4.
when intr, often foll by at. to attack (a person or persons) with a rifle from a place of concealment
5.
(intransitive) often foll by at. to criticize adversely a person or persons from a position of security
6.
(intransitive) to hunt or shoot snipe
sneaky