1. One's male child.
2. A male descendant.
3. A man considered as if in a relationship of child to parent: a son of the soil.
4. One personified or regarded as a male descendant.
5. Used as a familiar form of address for a young man.
6. Son Christianity. The second person of the Trinity.

[Middle English, from Old English sunu.]

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.