to make sb feel more excited or determined; to fill a tyre, etc. with air using a pump
pump sb up
to make sb feel more excited or determined
pump sth up
to fill a tyre, etc. with air using a pump
pump sth upinformal
to increase the amount, value or volume of sth
Interest rates were pumped up last week.
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition