Out of reach means too far away to be taken. Keep it out of reach, out of reach of children.
On medicine bottles it is the standard instruction and means high rather than merely hidden. Of a goal it means no longer achievable, which is the figurative use.
1phraseout of reachToo far away to be taken.
“The cupboard was high enough to be out of reach.”
out of reach is a phrase.
Practised in Directions & Position