What is Bill For Foreclosure?

Legal Definition
One which is filed by a mortgagee against the mortgagor, for the purpose of having the estate sold, thereby to obtain the sum mortgaged on the premises, with interest and costs. 1 Madd. Ch. Pr. 528.
-- Black's Law Dictionary
Legal Definition
A bill in equity in a suit to foreclose a lien, mortgage or pledge.
-- Ballentine's Law Dictionary