The Collaborative International Dictionary
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.
Wiktionary
n. The larva of the blowfly, ''especially'' when found on rotten meat. vb. 1 (context transitive English) To deposit eggs upon, as a blowfly does on meat; to cause to be maggoty. 2 (context transitive by extension English) To taint or contaminate.
Usage examples of "flyblow".
He doubted whether in all the land there was a child who had as much liberty as this flyblow of his.
Yet as she sat on the side of the bunk and looked down on the sleeping face of Josefina she asked herself what else she could have done, and the answer came, she could have done what Matthew told her she must do, return home alone wccth Willy and leave his flyblow behind.
Flippant, flyblow, half-baked wiseacreing is about the worst thing in the world, compared to honest ignorance.