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fer-de-lance

American  
[fer-dl-ans, -ahns] / ˌfɛr dlˈæns, -ˈɑns /

noun

  1. a large pit viper, Bothrops atrox, of tropical America.


fer-de-lance British  
/ ˌfɛədəˈlɑːns /

noun

  1. a large highly venomous tropical American snake, Trimeresurus (or Bothops ) atrox , with a greyish-brown mottled coloration: family Crotalidae (pit vipers)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of fer-de-lance

1875–80; < French: literally, spearhead

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Only when they reviewed the images did the Grammatico twins realise they had captured a mosquito resting on the head of a fer-de-lance viper.

From BBC ● Aug. 25, 2026

Unless it is a fer-de-lance, or bothrops asper, a nasty pit viper found in Central and South America.

From The Guardian ● Jun. 10, 2019

Plentiful, horrifying details are supplied, occasionally to comic effect: “Hey, guys,” moans Mumy, conveying Preston’s dismay as his flashlight illuminates a six-foot, head-swaying fer-de-lance, “there’s a giant snake here.”

From Washington Post ● Mar. 22, 2017

One of the deadliest snakes in Mexico, a tawny fer-de-lance, was slithering by his head, 30 centimeters away.

From Science Magazine ● Nov. 23, 2016

Meanwhile the doctor bade his attendant put on the table a big jararaca, or fer-de-lance, which was accordingly done.

From Through the Brazilian Wilderness by Theodore Roosevelt

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