headwords

/HH EH1 D W ER0 D Z/
noun
  1. 1

    A word used as the title of a section, particularly in a dictionary, encyclopedia, or thesaurus

  2. 2

    (grammar) any word which may be modified by an adjunct

    โ€œIn "a very discerning car shopper", "shopper" is the headword.โ€

Synonyms

Source: https://en.wiktionary.org/wiki/headword, https://en.wiktionary.org/wiki/headwords