noun
1. large-headed swift-flying diving duck of Arctic regions
• Syn: ↑whistler, ↑Bucephela clangula
• Hypernyms: ↑duck
• Hyponyms: ↑Barrow's goldeneye, ↑Bucephala islandica
• Member Holonyms: ↑Bucephala, ↑genus Bucephala
2. a variety of green lacewing
• Syn: ↑golden-eyed fly
• Hypernyms: ↑green lacewing, ↑chrysopid, ↑stink fly
Useful english dictionary. 2012.