Leaps consume a folding chair (4-4)

I believe the answer is:

jump-seat

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'a folding chair' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'leaps consume' is the wordplay.
'leaps' becomes 'jumps' ('jump' can be a synonym of 'leap').
'consume' becomes 'eat' (eating is a kind of consuming).
'jumps'+'eat'='JUMP-SEAT'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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