Oxford Dictionary English word class nounnoun BrE BrE//ˈwɜːd klɑːs// ; NAmE NAmE//ˈwɜːrd klæs// (grammar) Add to my wordlistjump to other results one of the classes into which words are divided according to their grammar, such as noun, verb, adjective, etc. synonym part of speechSee word class in the Oxford Advanced American DictionaryCheck pronunciation: word class oxfordlearnersdictionaries.com