n.small blackish stout-bodied biting fly having aquatic larvae; sucks the blood of birds as well as humans and other mammals
同义词：blackflyblack fly
英汉双解大词典
buffalo gnat
1.
N（名词）
any of various small North American blood-sucking dipterous insects of the genus Simulium and related genera: family Simuliidae 北美水牛蚋 (Also called black fly)