gnat
/næt/noun
1- a small two-winged fly that resembles a mosquito. Gnats include both biting and non-biting forms, and they typically form large swarms蚊; 蚋; 状似蚊子的双翅目长角皿目昆虫（包括咬人的和不咬人的两类, 多大量成群出现）。
1.1
- Several families, especially Culicidae (the biting gnats), which includes the common gnat (Culex pipiens).数科, 尤指蚊科（咬人的两翼小昆虫）, 包括尖音库蚊（拉丁名Culex pipiens）。
1.2
- a person or thing seen as tiny or insignificant, especially in comparison with something larger or more important（尤指相比较）看起来渺小（或不重要）的人（或物）：
I was only a gnat in the affair.
在这件事中我是微不足道的。
词源
Old English gnætt, of Germanic origin; related to German Gnitze.