Main Entry: 1fool
Pronunciation: 'fül
Function: noun
Etymology: Middle English, from Old French fol, from Late Latin follis, from Latin, bellows, bag; akin to Old High German bolla blister, balg bag -- more at BELLY
1 : a person lacking in judgment or prudence
2 a : a retainer formerly kept in great households to provide casual entertainment and commonly dressed in motley with cap, bells, and bauble b : one who is victimized or made to appear foolish : DUPE
3 a : a harmlessly deranged person or one lacking in common powers of understanding b : one with a marked propensity or fondness for something
4 : a cold dessert of pureed fruit mixed with whipped cream or custard
Looks like 1, 2 and 3 apply in this case.