Luck bringer at many a racecourse? (6)
I believe the answer is:
mascot
'luck' is the definition.
(thesaurus)
'at many a racecourse?' is the wordplay.
'at' is a charade indicator (letters next to each other).
'many' becomes 'M' (Roman numeral for a thousand).
'a racecourse?' becomes 'ascot' (British racecourse).
'm' next to 'ascot' is 'MASCOT'.
'bringer' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for mascot that I've seen before include "Team's good luck bringer" , "Thing believed to bring good luck to its owner or team" , "Team's lucky person/thing" , "Thing considered to bring good luck" , "Lucky talisman" .)