1. The act or process of collecting.
2. A group of objects or works to be seen, studied, or kept together.
3. A line of products produced for one season, as those developed by a designer: promoted the summer collection in the store window.
4. An accumulation; a deposit: a collection of dust on the piano.
5. 1. A collecting of money, as in church.
   2. The sum so collected.

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.