The Italian word for 'boy', pronounced 'poo-toh' or 'poot-taw'. The plural form is putti (pronounced 'poo-tee').
In English, 'putto' is used to refer to a chubby, naked, infant boy in a classical or renaissance painting. They are usually, but not necessarily, winged.
Putto is not a common or commonly recognizable term. If the imps are holding little bows (of the shooting-arrows kind) they are more often called cupids, or sometimes amoretti. If they are representing an angel, they are more often called cherubs.