Pronunciation: ( —adv.neks'dôr', -dōr', nekst'-; —adj.neks'-dôr", -dōr", nekst'-),[key] —adv. Also,next' door'.to, at, or in the next house on the street, esp. if it is very close by, or the adjacent apartment, office, room, or the like: Go next-door and get your sister. Your sister is next-door. Her brother lives next-door.
—adj. being situated or living next-door: next-door neighbors.