What is "smother fly"

Smother \Smoth"er\, n. [OE. smorther. See Smother, v. t.]

1. Stifling smoke; thick dust.
   --Shak.

2. A state of suppression. [Obs.]

   Not to keep their suspicions in smother.
   --Bacon.

3. That which smothers or causes a sensation of smothering, as smoke, fog, the foam of the sea, a confused multitude of things.

   Then they vanished, swallowed up in the grayness of the evening and the smoke and smother of the storm.
   --The Century.

   Smother fly (Zo["o]l.), an aphid.