1.
to hold sth tightly :
Hang on tight—we're off!
➡ note at hold
2.
( informal ) used to ask sb to wait for a short time or to stop what they are doing :
Hang on—I'm not quite ready.
Now hang on a minute—you can't really believe what you just said!
3.
to wait for sth to happen :
I haven't heard if I've got the job yet—they've kept me hanging on for days.
4.
( informal ) used on the telephone to ask sb who is calling to wait until they can talk to the person they want :
Hang on—I'll just see if he's here.
5.
to continue doing sth in difficult circumstances :
The team hung on for victory.