1. [very common] To wait for an event that will
never occur. "The system is hanging because it can't read from
the crashed drive". See wedged, hung. 2. To wait for
some event to occur; to hang around until something happens. "The
program displays a menu and then hangs until you type a
character." Compare block. 3. To attach a peripheral
device, esp. in the construction `hang off': "We're going to
hang another tape drive off the file server." Implies a device
attached with cables, rather than something that is strictly inside
the machine's chassis.