[dawr, dohr] 
| 1. | a movable, usually solid, barrier for opening and closing an entranceway, cupboard, cabinet, or the like, commonly turning on hinges or sliding in grooves. |
| 2. | a doorway: to go through the door. |
| 3. | the building, house, etc., to which a door belongs: My friend lives two doors down the street. |
| 4. | any means of approach, admittance, or access: the doors to learning. |
| 5. | any gateway marking an entrance or exit from one place or state to another: at heaven's door. |
| 6. | lay at someone's door, to hold someone accountable for; blame; impute. |
| 7. | 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. |
| 8. | lie at someone's door, to be the responsibility of; be imputable to: One's mistakes often lie at one's own door. |
| 9. | show someone the door, to request or order someone to leave; dismiss: She resented his remark and showed him the door. |
door (dôr, dōr)  (click for larger image in new window) n.
[Middle English dor, from Old English duru, dor; see dhwer- in Indo-European roots.] door'less adj. |
"A door is what a dog is perpetually on the wrong side of." [Ogden Nash]First record of dooryard is c.1764, Amer.Eng.; doorstep is from 1810.
leave the door open
Allow for further action or discussion. For example, This will's terms leave the door open for fighting among the heirs. This metaphoric expression transfers the invitation implied by an open door to future events. Also see open the door to.