Definition of "yellow-bellied" []

• Having a belly that is yellow or yellowish. Used of certain birds, for example. (adjective)
• Slang Cowardly. (adjective)

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.

• "Olive-backed Sunbird, Cinnyris jugularis formerly, Nectarinia jugularis; protonym; Certhia jugularis, also known as the yellow-bellied sunbird, photographed at Langkawi, the Jewel of Kedah, Malaysia."
• "The snake is, depending on the source, an olive whipsnake (which is venomous) or a yellow-bellied puffing snake (Pseustes sulphureus) which is not."
• "Lindsey Graham is just another pink-faced, yellow-bellied HYPOCRITE who only remains in power due to the overwhelming majority of white-trash redneck voters in SC (the same ones with the Confederate flags in their front yards and the plastic Jesuses on their mantles)."