Definitions of bonito:

• noun:   any of various scombroid fishes intermediate in size and characteristics between mackerels and tunas
• noun:   fish whose flesh is dried and flaked for Japanese cookery; may be same species as skipjack tuna
• noun:   flesh of mostly Pacific food fishes of the genus Sarda of the family Scombridae; related to but smaller than tuna
• name:  A surname (very rare: popularity rank in the U.S.: #58355)