What Does Wake-On-LAN (WoL) Mean?

Wake-on-LAN (WoL) is a particular function that allows a computer or workstation to be powered up from a low-power state by a message from another part of a local area network. Companies and other entities may use Wake-on-LAN to conserve power in networked computing.

Techopedia Explains Wake-On-LAN (WoL)

Using Wake-on-LAN, administrators can provide for computers to be working remotely through Ethernet or wireless cards. The Wake-on-LAN signal can come from a computer or device on the same LAN or from somewhere on a different network, through subnet directed broadcasts or through a Wake-on-LAN Gateway service.