1. 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 occurto 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, especially 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.