yellow bellied

/ˈjɛloʊ ˌbɛlid/
adjective
  1. Cowardly; lacking courage or bravery.
    • The yellow-bellied thief ran away instead of facing the guard.
    • He was too yellow-bellied to stand up for what was right.
    • Calling someone yellow-bellied is an old-fashioned insult.
  2. Having a yellow underside or belly (used especially of animals).
    • The yellow-bellied frog is easy to spot because of its bright underside.
    • The yellow-bellied turtle hides when it senses danger.
    • Birdwatchers often look for the yellow-bellied warbler in the spring.
What does "yellow bellied" mean? | whatsthatwordmean | whatsthatwordmean