greenwing
ˈɡriːnwɪŋ
Definitions
1. noun
A species of swallow that has a green or greenish tint on its wings
“The rare greenwing was spotted in the remote region of the country.”
2. adjective
Describing something that has a green or greenish tint, especially in relation to wings
“The greenwing butterfly was a unique addition to the collection.”