Source : Webster's Revised Unabridged Dictionary (1913)

Flyblow \Fly"blow`\, v. t.
   To deposit eggs upon, as a flesh fly does on meat; to cause
   to be maggoty; hence, to taint or contaminate, as if with
   flyblows. --Bp. Srillingfleet.

Flyblow \Fly"blow`\, n. (Zo["o]l.)
   One of the eggs or young larv[ae] deposited by a flesh fly,
   or blowfly.