A short distance between a weapon and a target.

plural of close range

(nautical) The point of sail where the wind is blowing just ahead of the beam of the vessel

(nautical) To sail on a close reach

plural of close borough

Synonym of pocket borough

Synonym of behind closed doors (“in private”)

(of troops etc.) in an arrangement in compact units at close intervals and distances, as for marching and/or drill.

plural of closed interval

Third-person singular simple present indicative form of close the book on