'Smother fly' definitions:

Definition of 'Smother fly'

From: GCIDE

Smother \Smoth"er\, n. [OE. smorther. See Smother, v. t.]
1. Stifling smoke; thick dust. --Shak. [1913 Webster]
2. A state of suppression. [Obs.] [1913 Webster]
Not to keep their suspicions in smother. --Bacon. [1913 Webster]
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. [Webster 1913 Suppl.]
Smother fly (Zool.), an aphid. [1913 Webster]