gnat
nounUK /næt/
US /næt/
A gnat is a very tiny flying bug that can bite you.
A gnat flew into my eye while we were hiking.
OTHER MEANINGS
2. Any of various small two-winged flies, especially those that bite or annoy people and animals.
The swamp was thick with gnats at dusk.
3. A tiny or insignificant person or thing.
He strained at a gnat while swallowing a camel.
4. A small biting fly of the family Simuliidae, also called a blackfly.
Gnats gathered around the cattle near the river.