Meaning of “reach” - Learner’s Dictionary

reach

noun uk us /riːtʃ/
out of/beyond (sb's) reach

B2 too far away for someone to take hold of:

I keep the medicines up here, out of the kids' reach.
beyond (sb's) reach

not possible for someone to have:

With all this money we can buy things previously beyond our reach.
be within reach (of sth)

B2 to be close enough to travel to:

You'll be within easy reach of London.
be within (sb's) reach

B2 to be close enough for someone to take hold of:

The gun lay within reach.

possible for someone to achieve:

Winning the championship suddenly seemed within their reach.

(Definition of “reach noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)