a movable, usually solid, barrier for opening and closing an entranceway, cupboard, cabinet, or the like, commonly turning on hinges or sliding in grooves.

a doorway

to go through the door.

the building, house, etc., to which a door belongs

My friend lives two doors down the street.

any means of approach, admittance, or access

the doors to learning.

any gateway marking an entrance or exit from one place or state to another

at heaven's door.

lay at someone's door

to hold someone accountable for; blame; impute.

leave the door open

to allow the possibility of accommodation or change; be open to reconsideration

The boss rejected our idea but left the door open for discussing it again next year.

lie at someone's door

to be the responsibility of; be imputable to

One's mistakes often lie at one's own door.

show someone the door

to request or order someone to leave; dismiss

She resented his remark and showed him the door.

noun

aperture , egress , entry , entryway , exit , gate , gateway , hatch , hatchway , ingress , opening , portal , postern , slammer , barrier , casing , entrance , french door , jamb , louver , mullion , opportunity , panel , passage , porch , porte-cochre , portico. associatedwords: lintel , rabbet , rail , reveal , sill , stile , threshold , tympanum , wicket