part of speech      
noun [ C ]  language uk/ˌpɑːt əv ˈspiːtʃ/ us/ˌpɑːrt əv ˈspiːtʃ/ (also word class)
 词类,词性
one of the grammatical groups, such as noun, verb, and adjective, into which words are divided depending on their use
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 - In this dictionary, parts of speech are printed in italic, after pronunciations.