1.
If you ask someone to ~, you ask them to wait or stop what they are doing or saying for a moment. (INFORMAL)
Can you ~ for a minute?...
Hang on a sec. I’ll come with you.
= hold on
PHRASAL VERB: V P, V P n
2.
If you ~, you manage to survive, achieve success, or avoid failure in spite of great difficulties or opposition.
Manchester United hung on to take the Cup.
PHRASAL VERB: V P
3.
If you ~ to or ~to something that gives you an advantage, you succeed in keeping it for yourself, and prevent it from being taken away or given to someone else.
The British driver was unable to ~ to his lead...
The company has been struggling to ~to its sales force.
PHRASAL VERB: V P to n, V P n
4.
If you ~ to or ~to something, you hold it very tightly, for example to stop it falling or to support yourself.
She was conscious of a second man hanging on to the rail.
...a flight stewardess who helped save the life of a pilot by hanging onto his legs...
He hangs on tightly, his arms around my neck.
= cling
PHRASAL VERB: V P to n, V P n, V P
5.
If you ~ to or ~to something, you keep it for a longer time than you would normally expect. (INFORMAL)
You could, alternatively, ~to it in the hope that it will be worth millions in 10 years time...
In the present climate, owners are hanging on to old ships.
PHRASAL VERB: V P n, V P to n
6.
If one thing hangs on another, it depends on it in order to be successful.
Much hangs on the success of the collaboration between the Group of Seven governments and Brazil.
= depend
PHRASAL VERB: V P n