Train from east expected outside Bombay, perhaps (7)
I believe the answer is:
educate
'train' is the definition.
(I know that train is a more specific form of educate)
'east expected outside bombay perhaps' is the wordplay.
'east' becomes 'e' (abbreviation).
'expected' becomes 'due' (similar in meaning).
'outside' indicates putting letters inside (some letters go outside others).
'bombay perhaps' becomes 'cat' (I can't justify this - if you can you should give a lot more credence to this answer).
'due' going around 'cat' is 'ducate'.
'e'+'ducate'='EDUCATE'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for educate that I've seen before include "Inform" , "School, train" , "Team" , "Train, teach" , "Bring up" .)