1. (noun) a pistol with a revolving cylinder (usually having six chambers for bullets)

• six-gun
• six-shooter

2. (noun) a door consisting of four orthogonal partitions that rotate about a central pivot; a door designed to equalize the air pressure in tall buildings

• revolving door

1. (noun) a pistol with a revolving cylinder (usually having six chambers for bullets)

• colt

1. (noun) a pistol with a revolving cylinder (usually having six chambers for bullets)

• handgun
• pistol
• shooting iron
• side arm

2. (noun) a door consisting of four orthogonal partitions that rotate about a central pivot; a door designed to equalize the air pressure in tall buildings

• door