Rashi on Isaiah
we have made a limit a boundary that it should not cross. Comp. (Ps. 117:30) “the boundary (מְחוֹז) of their desire,” similarly (I Kings 7:4), “An edge opposite an edge (מֶחֱזָה אֶל מֶחֱזָה). They are all an expression of a boundary and an extremity of a thing, asomajjl in O.F.