Cloves are the dried small buds of a tropical tree.

The following recipes on this site use cloves:

Hot Buttered Rum (batter mix)
brown sugar, butter, salt, nutmeg, cloves, cinnamon,
Cafe Diable
orange, brandy, cloves, sugar, coffee,
Tom and Jerry (batter mix)
eggs, rum, cinnamon, cloves, allspice, cream of tartar, sugar,