Definitions

1. noun

A greenhead is a colloquial term for the female black fly (Simulium vittatum), particularly when it is in its biting stage. The females of this species can be aggressive biters and are often associated with discomfort and pain.

“After being bitten by a greenhead, the beachgoer complained about the intense pain.”

2. noun

A greenhead is also a colloquial term for the green bottle fly (Lucilia sericata) larvae, which are often seen as pests due to their presence in decaying organic matter.

“The greenhead larvae in the compost pile were a nuisance to the gardener.”