Definition of "sidewinder" [side•wind•er]

• A small rattlesnake (Crotalus cerastes) of the southwest United States and Mexico that moves by a distinctive lateral looping motion of its body and has two hornlike scaly projections above its eyes. (noun)
• A powerful swinging punch delivered from the side. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Though I'm enjoying the pretty pictures sidewinder is sharing."
• "And since sidewinder is going to send one - I've got to get the strangely goofy birthday card out to Ian Copeland."
• "Need to take some Advil. sidewinder is SERIOUSLY trying to get me to snort said coffee through my nose."