Look up a word, learn it forever.
pit viper with horny segments at the end of the tail that rattle when shaken
show 12 types...
hide 12 types...
large deadly rattlesnake with diamond-shaped markings
Crotalus horridus horridus
widely distributed in rugged ground of eastern United States
widely distributed between the Mississippi and the Rockies
small pale-colored desert rattlesnake of southwestern United States; body moves in an s-shaped curve
Western diamondback rattlesnake
largest and most dangerous North American snake; of southwestern United States and Mexico
mountain rock dweller of Mexico and most southern parts of United States southwest
having irregularly cross-banded back; of arid foothills and canyons of southern Arizona and Mexico
extremely dangerous; most common in areas of scattered scrubby growth; from Mojave Desert to western Texas and into Mexico
markings vary but usually harmonize with background; of southwestern Arizona and Baja California
pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians
small pygmy rattlesnake
Crotalus horridus atricaudatus
New World vipers with hollow fangs and a heat-sensitive pit on each side of the head
a railroad train consisting of freight cars
a long-distance express freight train between industrial centers and seaports with facilities for rapid loading and unloading of goods
public transport provided by a line of railway cars coupled together and drawn by a locomotive
Sign up now (it’s free!)
Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.
Play the Challenge
Commonly Confused Words
Join a Vocabulary Jam
Classroom & Site License
Help Articles / FAQ
News & Events
Tell us what you think
Team / Jobs
Schools & Teachers
My SAT Roadmap
Assignments & Activities
Find a List to Learn...
Create a New List...
Words I'm Learning
My Trouble Words
Words I've Mastered
Copyright © 2021 Vocabulary.com, Inc., a division of IXL Learning • All Rights Reserved.