a feature of a website that prevents users from accessing certain web pages unless they have paid to use the website 付费墙,收费墙(对网站内容设限,须付费才能访问) I used to read the newspaper online until the company put up a paywall. 我过去常常在网上看报纸,直到公司建立了付费墙。 - behind a paywall
The most interesting pages on the site are behind a paywall. 这个网站最有趣的网页都在付费专区里。