Walks around while public transport is full of leading people (6)
I believe the answer is:
tramps
'walks' is the definition.
(tramp is a kind of walk)
'transport is full of leading people' is the wordplay.
'transport' becomes 'trams' (trams are a type of public transport).
'is full of' means one lot of letters goes inside another.
'leading' indicates taking the first letters (the leading letter of the word).
The first letter of 'people' is 'p'.
'trams' enclosing 'p' is 'TRAMPS'.
'around while public' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for tramps that I've seen before include "Hiking vagrants" , "Stumps" , "Journeys wearily" , "Homeless people" , "Walks heavily with vagrants" .)