What does the word gnat mean?

Usage examples for gnat

  1. Sometimes as many as fifteen parasites occurred in one gnat, but as a rule only one of these attained maturity. – On the Origin and Metamorphoses of Insects by Sir John Lubbock
  2. There was not a mosquito, or gnat, or other pest in the woods, the cool nights having already cut them off. – Locusts and Wild Honey by John Burroughs