Primarily jumbo epicurean receptacle: outsize bottle of aerated merriment! (8)
I believe the answer is:
jeroboam
'primarily jumbo epicurean receptacle outsize bottle of aerated merriment' is the definition.
I can't tell whether this definition defines the answer.
'primarily jumbo epicurean receptacle outsize bottle of aerated merriment' is the wordplay.
'primarily' indicates taking the first letters.
'bottle of aerated merriment' becomes 'boam' (this could be a standard abbreviation I've not previously seen).
The first letters of 'jumbo epicurean receptacle outsize' is 'jero'.
'jero'+'boam'='JEROBOAM'
Can you help me to learn more?
(Other definitions for jeroboam that I've seen before include "large sparkling container?" , "Wine bottle 4-12 times the ordinary size" , "Four bottles of wine in one" , "Four-times bottle size" , "a lot of bottle?" .)