greenhead

(redirected from greenhead flies)
Also found in: Medical.

green·head

 (grēn′hĕd′)
n.
1. A male mallard duck.
2. Any of several horseflies having green eyes, found especially in coastal regions.

greenhead

(ˈɡriːnˌhɛd)
n
(Animals) a male mallard
References in periodicals archive ?
In "Seen, Unseen," for example, the advice of Paul in the epigraph ("We do not fix our gaze on what is seen but on what is unseen"), leads to close study of single moments in the natural world: a heron entering and taking leave of a pond; the discovery in the Sierra Mountains of "the shimmer and claque / of white-silver petioles in the breeze"; and three insects--moths drawn to light, greenhead flies "that light--and bite" far out in the bay, and a dragonfly "poised on the halyard in a stiff nor'easter.
It's a much better time for birding and walking the beach at Plum Island than the middle of the summer when the greenhead flies are out and the piping plovers are nesting," she says.