an act of pushing yourself suddenly up into the air using your legs [= leap]:
the best jump of the competition
a dancer famous for his impressive jumps
an act of letting yourself drop from a place that is above the ground
do/make a jump
Douglas made his first 10,000 foot parachute jump yesterday.
a sudden large increase in an amount or value
a jump in inflation rates
a large or sudden change, especially one that improves things:
progressespecially British English
The new law is a great jump forward for human rights.
5 British English
if you wake, sit up etc with a jump, you do it very suddenly because you are surprised or shocked:
She woke with a jump, hearing a noise downstairs.
6 British English informal
to keep your advantage over the people you are competing with by always being the first to do or know something new
a fence, gate, or wall that a person or horse has to jump over in a race or competition:
something you jump overDSHDS
Her horse cleared all the jumps in the first round.
8 American English informal
to gain an advantage, especially by doing something earlier than usual or earlier than someone else:
I want to get a jump on my Christmas shopping.