From Longman Dictionary of Contemporary Englishwelshwelsh, welch /welʃ $ welʃ, weltʃ/ verb [intransitive] informal PROMISEto not do something you have promised to do, such as paying someone money that you owe I never welch on my bets.→ See Verb tableWelshWelsh1 /welʃ/ adjective relating to Wales, its people, or its original languageWelshWelsh2 noun 1 → the Welsh2 [uncountable]SLL the original language used in WalesOrigin Welsh Old English wælisc, welisc “Celtic, Welsh, foreign”, from Wealh “Celt, Welsh person, foreigner”
