a swinging or sliding barrier that will close the entrance to a room or building or vehicle; "he knocked on the door"; "he slammed the door as he left"
a room that is entered via a door; "his office is the third door down the hall on the left"
a structure where people live or work (usually ordered along a street or road); "the office next door"; "they live two doors up the street from us"
anything providing a means of access (or escape); "we closed the door to Haitian immigrants"; "education is the door to success"
bear (a cost or penalty), in recompense for some action; "You'll pay for this!"; "She had to pay the penalty for speaking out rashly"; "You'll pay for this opinion later"
give money, usually in exchange for goods or services; "I paid four dollars for this sandwich"; "Pay the waitress, please"
discharge or settle; "pay a debt"; "pay an obligation"
do or give something to somebody in return; "Does she pay you for the work you are doing?"
make a compensation for; "a favor that cannot be paid back"
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)