Food (connected with prod, and perhaps prov [ender]). Burke says, “You are the lion, and I have been endeavouring to prog [procure food] for you.”
So saying, with a smile she left the rogue To weave more lines of death, and plan for prog.
Dr. Wolcot: Spider and Fly.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894