IPA: /ˈɡriːnˌhɛd/
KK: /ˈɡrinˌhɛd/
A male mallard duck or a type of green-eyed horsefly.
The greenhead flew over the pond, searching for food.
Greenhead is formed from "green" (from Old English "grēne", meaning the color of growing grass or foliage) and "head" (from Old English "heafod", meaning the upper part of the body or a leader). The term "greenhead" refers to a specific type of duck known for its green head, combining the color descriptor with the notion of a prominent feature.
Think of the color 'green' representing the duck's vibrant head, which is why 'greenhead' describes this particular duck.