Meaning: to save your money. To use less of something. To spend less money that you used to, because you have less.

Example Sentences:
1.- I have had to tighten my belt since I lost my job at the ice cream factory.
1.- Most people need to tighten the belt during economic slowdown.

Meaning: prevent something or somebody unpleasant from coming too near to one or harming one.

Example:
The area was hit by a serious epidemic, but luckily he could keep himself at bay.

Meaning: want somebody to be hurt or punished.

Example:
The victims’ families could be seen baying for blood of the assaulter’s during the trial.

Meaning: give responsibility for something important to another person.

Example:
The governor of the State Bank of India resigns this month, passing on the baton to one of his closest associates.