Providing transport sounds generous (6)
I believe the answer is:
hansom
'providing transport' is the definition.
'hansom' can be an answer for 'transport' (hansom is a kind of transport). I'm not certain of the 'providing' bit.
'sounds generous' is the wordplay.
'sounds' shows a homophone (sound like).
'generous' becomes 'handsome' (similar in meaning).
'handsome' is a homophone of 'HANSOM'.
Can you help me to learn more?
(Other definitions for hansom that I've seen before include "Old horse cab sounds attractive" , "Vehicle with back-seat driver" , "transport from the old days" , "Two-wheeled one-horse carriage" , "Two-wheeled horse-drawn covered cab" .)