Definition of grimalkin in English:

grimalkin

noun

archaic
  • 1A cat (used especially in reference to its characteristically feline qualities)

    • ‘She's written six paranormal romances about love complicated by grimalkins, witches, Druids, mermaids, and even mad scientists.’
    1. 1.1 A spiteful old woman.
      shrew, vixen, she-devil, hellcat
      View synonyms

Origin

Late 16th century: from gray + Malkin (nickname for the given name Matilda).

Pronunciation

grimalkin

/ɡrəˈmalkən/