A small cup used with a saucer for serving tea.(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 "teacup" in a sentence
"All of your photos are beautiful, but the one in teacup is exceptional."
"Meanwhile, today's teacup is one sent to me by stwish, made by his friends at Earthbound Arts (I also have a mermaid and a faerie queene -- ornaments -- from there, and both are lovely) And today's tea is the last of the crepe faire from Stash -- the last crepe faire ever, I suspect, as they've discontinued the flavor."
"Today's teacup is Paraphilias Involving Bunnies, which I have had since just before college."