Alternative form of doorknob

Alternative form of open door

A unrestricted means of admission or access. / The policy of admitting people or goods from foreign countries, on equal terms, into a host country.

Providing or establishing an open door.

Alternative form of leave at the door

(espionage) the barrier between compartmentalized intelligence information and those without access to it, especially military personnel who might need it

simple past tense and past participle of back door

simple past tense and past participle of barn door

present participle of barn door

(historical) A door with a baize surface attached to deaden noise, traditionally separating the servants' quarters from the main part of a house.