limit

The point, edge, or line beyond which something ends, may not go, or is not allowed.

The boundary surrounding a specific area; bounds.

Something that restricts or restrains; a restraint.

The greatest or least amount, number, or extent allowed or possible.

The largest amount which may be bet at one time in games of chance.

A number or point L that is approached by a function f(x) as x approaches a if, for every positive number ε, there exists a number δ such that |f(x)−L| < ε if |x−a| < δ.

A number or point L that is approached by a sequence b_n if, for every positive number ε, there exists a number N such that |b_n−L| < ε if n > N.

One that is intolerable, remarkable, or extreme in some other way.

To confine or restrict with a limit.