IPA: //ˈpeɪwɔːl//
KK: /ˈpeɪwɔl/
A system on a website or app that restricts access to certain content unless the user pays for a subscription.
Many news websites use a paywall to limit access to their articles for non-subscribers.
Paywall → It is formed from "pay" (from Old French *paier*, meaning to pay or settle a debt) and "wall" (from Old English *weall*, meaning a barrier or fortification). The word "paywall" refers to a barrier that requires payment to access content.
Think of a 'wall' that you must 'pay' to get through — that's what a paywall is, a barrier that requires payment for access.