deadeye

Short definition from Wiktionary

Adjective

1. 1
   Very accurate in shooting or throwing.
2. 2
   Cold; unfriendly.

Noun

1. 1
   A wooden disk having holes through which the lanyard is passed, used for tightening shrouds.
2. 2
   A very accurate marksman.
3. 3
   A penchant for noticing a particular thing, or a person who has such a penchant.