1. a silly or stupid person; a person who lacks judgment or sense.
2. a professional jester, formerly kept by a person of royal or noble rank for amusement.
3. a person who has been tricked or deceived into appearing or acting silly or stupid.
4. an ardent enthusiast who cannot resist an opportunity to indulge an enthusiasm (usually preceded by a present participle).
5. a weak-minded or idiotic person.
–verb (used without object)
7. to act like a fool; joke; play.
8. to jest; pretend; make believe
British Cookery .
1. a dish made of fruit, scalded or stewed, crushed and mixed with cream or the like
A fool of a fruit
Lured into this trap.