What is "fostermother"

Usage examples of "fostermother".

Or may the maledictions of Lousyfear fall like nettlerash on the white friar's father that converted from moonshine the fostermother of the first nancyfree that ran off after the trumpadour that mangled Moore's melodies and so upturned the tubshead of the stardaft journalwriter to inspire the prime finisher to fellhim the firtree out of which Cooper Funnymore planed the flat of the beerbarrel on which my grandydad's lustiest sat his seat of unwisdom with my tante's petted sister for the cause of his joy!