revolving door

Noun revolving door has 2 senses

• revolving door(n = noun.group) - an organization or institution with a high rate of turnover of personnel or membership;
is a kind of social group

• revolving door(n = noun.artifact) revolver - a door consisting of four orthogonal partitions that rotate about a central pivot; a door designed to equalize the air pressure in tall buildings;
is a kind of door