a narrow, sheltered waterway, especially an inlet in a shoreline or channel in a marsh:a sandy beach in a sheltered creek
North American & Australian/NZ a stream or minor tributary of a river: [in place names]:he drove into Adam’s Creek
be up the creek
informal
1 (also be up the creek without a paddle) be in severe difficulty or trouble, especially with no means of extricating oneself from it:if the police raided us I’d be up the creek
2British be stupid or misguided:he said my idea of Catholicism was up the creek