A sideways facial glyph used in e-mail to indicate an emotion or attitude, as to indicate intended humor [ :-) ].(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.
Use "emoticon" in a sentence
"Being such a social networking savvy person, you may know what the term emoticon means - it's a textual expression representing the face of a writer's mood or facial expression."
"I never until now realized that the primary job of any emoticon is to say "excuse me, that didn't make any sense.""
"The word emoticon is actually the word emotion and icon bumped up together so you get the word emoticon."