A room used by soldiers when on guard. / A jail cell in which military prisoners are kept.

(UK) Any of several regiments in the Household Division of the British Army / (Ireland) The Gardaí; the police force.

A rail set alongside a dangerous place as a barrier, to improve safety. / (figuratively, by extension) Any barrier designed to prevent accidents or mistakes.

A person, especially a soldier, who is on guard. / (US) A member of the National Guard. / (Britain) A member of a Guards regiment.

Alternative spelling of advance guard

A unit or units leading the way of advancing or marching troops, guarding them from ambushes, reconnoitering and pursuing the enemy, etc. / An individual soldier in the same role.

(fencing) The starting position of a fencing bout; en garde. / Vigilant, alert. / (aviation) Transmitting on the aircraft emergency frequency.

plural of fire guard

plural of gate guard

Any of several places in Iberia and the Americas, chiefly an island off Baja California. / A city in Santa Barbara County, California, United States.