1Frequently in plural A small item of food prepared as a treat or delicacy; a dainty; especially (in early use) a type of chocolate confection.
2The black-capped petrel, Pterodroma hasitata, native to islands in the Caribbean and now endangered.
3Caribbean The guacharo or oilbird, Steatornis caripensis.
Late 18th century; earliest use found in Anna Miller (1741–1781), poet and salon hostess. From French diablotin little devil, black-capped petrel, small sweet delicacy, guacharo from diablot little devil + -in.