1, The full form of DL is Download. It’s used on Computing ,Internet in Worldwide

An act or instance of transferring something (such as data or files) from a usually large computer to the memory of another device (such as a smaller computer) : an act or instance of downloading (see DOWNLOAD entry 2) something

In computer networks, download means to receive data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar system. This contrasts with uploading, where data is sent to a remote server. A download is a file offered for downloading or that has been downloaded, or the process of receiving such a file.

2, The full form of DL is Delta Airlines. It’s used on Transport & Travel ,Airport Codes in United States

Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. It is headquartered in Atlanta, Georgia.

3, The full form of DL is Disabled List. It’s used on Sports & Games ,Baseball in Worldwide

Major League Baseball, the Disabled List (DL) is a method for teams to remove their injured players from the roster in order to summon healthy players.

In Major League Baseball (MLB), the injured list (IL) is a method for teams to remove their injured players from the roster in order to summon healthy players. Before the 2019 season, it was known as the disabled list (DL).