1. The cardinal number equal to 9 + 1.
2. The tenth in a set or sequence.
3. Something having ten parts, units, or members.
4. Games. A playing card marked with ten spots.
5. A ten-dollar bill.

[Middle English, from Old English tīen.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.