Grimalkin is a term used to describe an old, malicious female witch. The crossword solutions for the term are HAG (3 letters), CAT (3 letters), CRONE (5 letters), IMP (3 letters), OLDBAG (6 letters) and OLDBAT (6 letters). HAG refers to an old woman who practices witchcraft, while CRONE is another word for an old woman. CAT and IMP refer to supernatural creatures associated with witches, and OLDBAG and OLDBAT are slang terms for an old woman.