Crossword Genius

Jump in vehicle: rank behind post office (10)

Ross

I believe the answer is:

trampoline

I'm a little stuck... Click here to teach me more about this clue!

'jump' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'vehicle rank behind post office' is the wordplay.
'vehicle' becomes 'tram' (tram is a kind of vehicle).
'rank' becomes 'line'.
'behind' says to put letters next to each other.
'post office' becomes 'po' (abbreviation).
'line' put after 'po' is 'poline'.
'tram'+'poline'='TRAMPOLINE'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for trampoline that I've seen before include "On which bouncers go" , "on which people go up and down" , "where pike may count in competition" , "bouncer" , "Sprung gymnastic equipment" .)

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app