A competition for military supremacy between two powers, especially for the most weapons and the best military technology. / (figuratively) Any similar competition that involves competing developments.

plural of long arm

(slang, UK) An individual who steals things or borrows them without asking.

(historical) A heavily-armed mounted member of medieval cavalry.

plural of coat of arms

plural of sergeant-at-arms

A person charged with keeping order at a meeting.

(military) A position of salute in the manual of arms in which the gun is held in both hands vertically in front of the body, with the muzzle upward and the trigger side forward.

(military) To adopt such a position.

(military) A position of a soldier in which the piece passes between the right elbow and the body at an angle of 45°.