grimalkin
/ɡrɪˈmalkɪn
/ /ɡrɪˈmɔːlkɪn/noun archaic
1A cat.She's written six paranormal romances about love complicated by grimalkins, witches, Druids, mermaids, and even mad scientists.
1.1A spiteful old woman.
Origin
Late 16th century: from grey + Malkin (pet form of the given name Matilda).