no-scope

Short definition from Wiktionary

Noun

1. 1
   A kill with a sniper rifle performed without scoping in.
2. 2
   Alternative spelling of no-scope.

Verb

1. 1
   To shoot without scoping in; especially with a high-precision, long-range gun, such as a sniper rifle.
2. 2
   To kill by means of a no-scope.
3. 3
   Alternative spelling of no-scope.