CWM Meaning of CWM in English cwm, Cwm BrE AmE kʊm kuːm —Welsh [ kʊm ] ▷ cwms kʊmz kuːmz ▶ ₍ˌ₎ˈ Rhondda BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012