Morsel definition:
1 : a small piece of food
2 : a tasty dish or something small, delectable and pleasing
1 : Distress and sadness at leaving food uneaten that you were looking forward to.
For example when you pack a lunch of delectable left-overs, and then you forget that lunch at home and go to work hungry.
Sibling definition:
1 : one of two or more individuals having one common parent