walk-in
     adj : of e.g. closets or refrigerators extending very far enough
           back to allow a person to enter; "a deep walk-in
           refrigerator"; "walk-in closets" syn: walk-ina
     n 1: person who walks in without having an appointment; "the
          emergency room was overrun with walk-ins"
     2: an operative who initiates his own defection usually to a
        hostile country for political asylum
     3: an assured victory especially in an election syn: waltz
     4: a small room large enough to admit entrance
see also:
walk-ina waltz