cobra
/ˈkəʊbrə/noun
1- a highly venomous snake that spreads the skin of its neck into a hood when disturbed, native to Africa and Asia（亚洲和非洲产的）眼镜蛇。
1.1
- Naja and two other genera, family Elapidae: several species, in particular the spectacled cobra.眼镜蛇属及其他2属, 眼镜蛇科：数种, 尤指眼镜蛇。
词源
mid 17th cent.: from Portuguese cobra de capello, literally 'snake with hood', based on Latin colubra 'snake'.