(pl. -ies)
1
- a stupid or childish person呆子, 傻瓜。
2
- a large tropical seabird of the gannet family, with brown, black, or white plumage and typically having brightly coloured feet鲣鸟（一种热带海鸟）。
2.1
- Genus Sula, family Sulidae: several species, including the common red-footed booby (S. sula).鲣鸟属, 鲣鸟科：数种, 包括常见的红脚鲣鸟（拉丁名S. sula）。
词源
early 17th cent.: probably from Spanish bobo (in both senses), from Latin balbus 'stammering'.