In need of opening, kitchen passage (5)
I believe the answer is:
alley
'passage' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for alley that I've seen before include "Narrow passageway" , "garden path" , "Narrow lane; type of cat" , "Walk" , "Narrow back street" .)