Pushing engineers with joint (5)

I believe the answer is:

hinge

'joint' is the definition.
(I know that hinge is a type of hinge)

'pushing engineers with' is the wordplay.
'with' indicates a hidden word.
'HINGE' can be found hidden inside 'pushing engineers'.

(Other definitions for hinge that I've seen before include "Key principle" , "Device for letting door etc swing" , "Circumstance upon which subsequent events depend; door facilitator" , "Flexible joint" , "Part of a door" .)

I've seen this clue in The Mirror.

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