to deprive (a mortgagor or pledgor) of the right to redeem his or her property, especially on failure to make payment on a mortgage when due, ownership of property then passing to the mortgagee.
b.
to take away the right to redeem (a mortgage or pledge).
Origin: 1250–1300; Middle English foreclosen < Old French forclos, past participle of forclore to exclude, equivalent to for- out + clore to shut (< Latin claudere)
late 13c., from O.Fr. forclos, pp. of forclore "exclude," from fors "out" (from L. foris "outside;" see foreign) + clore "to shut." Specific mortgage law sense is first attested 1728. Related: Foreclosed; foreclosing.