Alley in outskirts of Passage-East on which we live (6)
I believe the answer is:
planet
'of passage-east on which we live' is the definition.
The definition suggests a singular noun which matches the answer.
'alley in outskirts' is the wordplay.
'alley' becomes 'lane' (I've seen this in another clue).
'in' indicates putting letters inside.
'outskirts' becomes 'pt' (I can't justify this - if you can you should believe this answer much more).
'lane' inserted inside 'pt' is 'PLANET'.
Can you help me to learn more?
(Other definitions for planet that I've seen before include "One orbiting star" , "Celestial body orbiting around a star" , "Jupiter is one" , "Mars or Uranus" , "Eg, Mars, Venus" .)