synset

/ˈsɪnsɛt/
noun
  1. A group of words that are synonyms or closely related in meaning, used in lexical databases like WordNet.
    • In WordNet, each synset represents a single concept.
    • The dictionary grouped 'happy', 'glad', and 'cheerful' into one synset.
    • The synset for 'car' includes 'automobile', 'vehicle', and 'motorcar'.