A marksman who shoots from a concealed position, typically at long range. Originally referred to hunters of snipe birds.
From 'snipe' (the bird) + -er suffix, first used in 1770s for hunters skilled enough to shoot the elusive snipe. Military sense developed during American Civil War as tactics evolved.
The snipe is notoriously difficult to hunt because of its erratic flight pattern and marsh habitat, so 'sniping' became synonymous with exceptional marksmanship. The bird's name itself comes from its long, thin bill resembling a marksman's precision.
Complete word intelligence in one call. Free tier — 50 lookups/day.