Passes stuff with spades (6)
I believe the answer is:
gorges
'passes' is the definition.
(I know this)
'stuff with spades' is the wordplay.
'stuff' becomes 'gorge' (as in gorging or stuffing oneself with food).
'with' means one lot of letters go next to another.
'spades' becomes 's' (abbreviation in card games).
'gorge'+'s'='GORGES'
(Other definitions for gorges that I've seen before include "Eats greedily in ravines?" , "Deep ravines" , "Makes a pig of oneself in the ravines" .)