The Collaborative International Dictionary of English v.0.48:
Foreclose \Fore*close"\, v. t. [imp. & p. p. Foreclosed; p.
pr. & vb. n. Foreclosing.] [F. forclos, p. p. of forclore
to exclude; OF. fors, F. hors, except, outside (fr. L. foris
outside) + F. clore to close. See Foreign, and Close, v.
To shut up or out; to preclude; to stop; to prevent; to bar;
The embargo with Spain foreclosed this trade. --Carew.
To foreclose a mortgager (Law), to cut him off by a
judgment of court from the power of redeeming the
mortgaged premises, termed his equity of redemption.
To foreclose a mortgage, (not technically correct, but
often used to signify) the obtaining a judgment for the
payment of an overdue mortgage, and the exposure of the
mortgaged property to sale to meet the mortgage debt.