childproof

[chahyld-proof]

resistant to being opened, tampered with, or operated by a child: a childproof medicine bottle.

made free of hazard for a child: a childproof home.

made safe from damage by children: a childproof living room free of breakable objects.

to make childproof: to childproof a home.

Origin of childproof

First recorded in 1955–60; child + -proof

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

A concern already has been put forward to child-proof the next generation of pot treats that come in various shapes and sizes.
Can You Really O.D. on Pot?
Kent Sepkowitz
February 3, 2014

Word Origin and History for child-proof

adj.

1933, from child (n.) + proof (n.). As a verb by 1951.