bouncing castle
nounUK /ˌbaʊnsɪŋ ˈkɑːsəl/ · US /ˌbaʊnsɪŋ ˈkæsəl/
1
A large inflatable structure, resembling a castle etc., on which children jump and play as on a trampoline.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.