IPA: /ˈtʃaɪldpruːf/
KK: /ˈtʃaɪldˌpruf/
Made safe for young children by preventing access to potentially dangerous items or areas.
The new cabinets are childproof, so the kids can't get into the cleaning supplies.
To make something safe for children by removing or securing potential hazards.
They decided to childproof the house before the baby arrived.
Past: childproofed
Past Participle: childproofed
Childproof → It is formed from "child" (from Old English "cild", meaning a young human) and "proof" (from Old French "proef", meaning to test or to make secure). The word "childproof" means designed to be safe for children, preventing them from accessing potentially dangerous items.
Think of a 'child' being kept safe from harm — 'proof' means secure or tested, so 'childproof' means made secure for children.