1. Any of various small Old World parrots, especially of the genus Agapornis, often kept as cage birds and noted for the apparent affection between mates.
2. lovebirds Informal. A couple who are openly affectionate or demonstrative with each other, especially in public.

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.