'Fer-de-lance' definitions:

Definition of 'fer-de-lance'

(from WordNet)
noun
Large extremely venomous pit viper of Central America and South America [syn: fer-de-lance, Bothrops atrops]

Definition of 'Fer-de-lance'

From: GCIDE
  • Fer-de-lance \Fer`-de-lance"\, n. [F., the iron of a lance, lance head.] (Zool.) A large, venomous serpent (Trigonocephalus lanceolatus) of Brazil and the West Indies. It is allied to the rattlesnake, but has no rattle. [1913 Webster]