Bloodshed caused by acceleration of Irish gold, reportedly (4)
I believe the answer is:
gore
'bloodshed' is the definition.
(I know that bloodshed can be written as gore)
'acceleration of irish gold reportedly' is the wordplay.
'acceleration of irish' becomes 'g' (I can't justify this - if you can you should believe this answer much more).
'gold' becomes 'or' ('or' is the heraldic name for gold).
'reportedly' shows a homophone (sound like).
'or' is a homophone of 'ore'.
'g'+'ore'='GORE'
'caused by' acts as a link.
Can you help me to learn more?
(Other definitions for gore that I've seen before include "Make a hole in" , "Blood; stab with tusk" , "Spilt blood" , "Bloodshed" , "piece of material" .)