Doctor, one born British, meets Heather running slowly (9)
I believe the answer is:
dribbling
'running slowly' is the definition.
'dribbling' can be an answer for 'running' (dribbling is a kind of running). I am not certain of the 'slowly' bit.
'doctor one born british meets heather' is the wordplay.
'doctor' becomes 'dr' (abbreviation).
'one' becomes 'i' (Roman numeral).
'born british' becomes 'bb' (this could be a standard abbreviation which I don't know about).
'meets' says to put letters next to each other.
'heather' becomes 'ling' (synonyms).
'dr'+'i'+'bb'+'ling'='DRIBBLING'
Can you help me to learn more?
(Other definitions for dribbling that I've seen before include "Acting like a baby" , "the art of a footballer?" , "playing football?" , "Talent of an infant" .)