playhouse
n. countable B2 Upper Intermediate US //ˈpɫeɪˌhaʊs// UK //plˈeɪhaʊs// play·house
n. a small building for children to play in, or a theater where people perform plays.
n. a small structure designed for children's recreational use, or a theater dedicated to dramatic performances. Often used in the names of specific theatrical venues.
The children are playing in their wooden playhouse in the garden.
The local playhouse is hosting a new production of a classic Shakespeare play this weekend.
While the children were content with their miniature playhouse, the adults gathered at the historic city playhouse to witness the premiere of the avant-garde drama.
Usage
When referring to a theater, it is frequently used as a proper noun in the name of the building.