A restroom is a public bathroom or lavatory. You might stop at a fast food restaurant during a long drive to use the restroom and buy some fries.

You'll find restrooms in restaurants, libraries, schools, highway rest areas, and shopping malls, among other places. Many restrooms are open to the public at large, while others are reserved for customers. While the term restroom is extremely common in the U.S., a restroom in Britain doesn't usually contain a toilet — it is simply a place to sit and rest. And in Canada, it's more often called a washroom.

Definitions of restroom
  1. noun
    a toilet that is available to the public
    synonyms: comfort station, convenience, public convenience, public lavatory, public toilet, toilet facility, wash room
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    ladies' room, powder room
    a woman's restroom in a public (or semipublic) building
    a public toilet in a military area
    men's, men's room
    a public toilet for men
    type of:
    something designed and created to serve a particular function and to afford a particular convenience or service
    bathroom, can, john, lav, lavatory, privy, toilet
    a room or building equipped with one or more toilets
Word Family