Dictionary.com
definitions

Wendy house

noun British.
  1. a child's playhouse.

Origin of Wendy house

First recorded in 1945–50; after the house that Peter Pan builds around Wendy in J. Barrie's Peter Pan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for wendy house

Wendy house

noun
  1. a small model house that children can enter and play in

Word Origin for Wendy house

C20: named after the house built for Wendy, the girl in J. M. Barrie's play Peter Pan (1904)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012