This stands for "Web Download." It means the file was losslessly ripped from a streaming service (like Netflix, Amazon Prime, or Disney+). Unlike a "WebRip," which is recorded while playing, a WEB-DL is generally considered higher quality because it is an exact copy of the original stream.
To understand what you're watching, you have to decode the nomenclature: movies4ubidbabygirl2024720pwebdlx264e exclusive
This refers to the resolution. 720p is High Definition (HD), offering 1280x720 pixels. While 1080p and 4K are higher, 720p remains popular because it offers a great balance between visual clarity and smaller file sizes. This stands for "Web Download