[1] : The Collaborative International Dictionary of English v.0.48

door \door\, n. oe. dore, dure, as. duru; akin to os. dura,
   dor, d. deur, ohg. turi, door, tor gate, g. th"ur, thor,
   icel. dyrr, dan. d"or, sw. d"orr, goth. daur, lith.
   durys, russ. dvere, olr. dorus, l. fores, gr. ?; cf. skr.
   dur, dv=ara. root246. cf. foreign.
   1. an opening in the wall of a house or of an apartment, by
      which to go in and out; an entrance way.
      1913 webster

            to the same end, men several paths may tread,
            as many doors into one temple lead.   --denham.
      1913 webster

   2. the frame or barrier of boards, or other material, usually
      turning on hinges, by which an entrance way into a house
      or apartment is closed and opened.
      1913 webster

            at last he came unto an iron door
            that fast was locked.                 --spenser.
      1913 webster

   3. passage; means of approach or access.
      1913 webster

            i am the door; by me if any man enter in, he shall
            be saved.                             --john x. 9.
      1913 webster

   4. an entrance way, but taken in the sense of the house or
      apartment to which it leads.
      1913 webster

            martin's office is now the second door in the
            street.                               --arbuthnot.
      1913 webster

   blank door, blind door, etc. arch. see under blank,
      blind, etc.

   in doors, or within doors, within the house.

   next door to, near to; bordering on.
      1913 webster

            a riot unpunished is but next door to a tumult.
                                                  --l'estrange.
      

   out of doors, or without doors, and, colloquially, out
   doors, out of the house; in open air; abroad; away; lost.
      1913 webster

            his imaginary title of fatherhood is out of doors.
                                                  --locke.

   to lay a fault, misfortune, etc. at one's door, to charge
      one with a fault; to blame for.

   to lie at one's door, to be imputable or chargeable to.
      1913 webster

            if i have failed, the fault lies wholly at my door.
                                                  --dryden.
      1913 webster

   note: door is used in an adjectival construction or as the
         first part of a compound with or without the hyphen,
         as, door frame, doorbell or door bell, door knob or
         doorknob, door latch or doorlatch, door jamb, door
         handle, door mat, door panel.
         1913 webster
see also:
foreign blank door blind door blank blind in doors 
within doors next door to out of doors without doors out doors 
to lay a fault, misfortune, etc. at one's door to lie at one's door 

Within >> W Words
Within, definition of term: Within
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Doors >> D Words
Doors, definition of term: Doors
doors_pag1.html