'efficiency apartment' definitions:

Definition of 'efficiency apartment'

From: WordNet
noun
A furnished apartment with a kitchenette and bathroom

Definition of 'efficiency apartment'

From: GCIDE
  • efficiency apartment \efficiency apartment\ n., a small apartment[4], sometimes furnished, with minimal kitchen and bath facilities. The unit may comprise a single room plus a bathroom, and the kitchen facilities are often open to the main room, or may form a small niche in a corner. There are many variations of efficiency apartment, including some in which furnishings such as a bed may be pulled out from a wall recess and stored there again when not in use. Also called an efficiency. [PJC]