a large, poisonous pit viper (Bothrops atrox) found in tropical America
Origin of fer-de-lanceFr, iron tip of a lance (from the shape of the head)
Any of several tropical American pit vipers of the genus Bothrops, typically having brown and grayish markings.
Origin of fer-de-lanceFrench, from fer de lance, spearhead : fer, iron + de, of + lance, spear.
French, the iron of a lance, spearhead.