CHILDPROOF
childproof, child-proof
(verb) make safe against children; “childproof the apartment”
Source: WordNet® 3.1
Etymology
Adjective
childproof (comparative more childproof, superlative most childproof)
Designed to be unable for a child to use, operate, or open.
Made safe for children.
Made safe from children; resistant to damage by children.
Verb
childproof (third-person singular simple present childproofs, present participle childproofing, simple past and past participle childproofed)
To make something childproof.
I debated childproofing my house, but decided against, on the basis that any scars or burns would serve as object lessons in restraint.
Source: Wiktionary