buidheag

Etymology
From.

Noun

 * 1) Used in compounds denoting various birds and flowers, especially (but not exclusively) yellow ones.
 * 2) any small yellow item
 * 3) yolk
 * 4) leather bag (for transporting liquids)
 * 1) yolk
 * 2) leather bag (for transporting liquids)

Derived terms

 * - buttercup
 * - yellowhammer