Hole inverted, nothing in squash bottle (8)
I believe the answer is:
jeroboam
'bottle' is the definition.
(jeroboam is a kind of bottle)
'hole inverted nothing in squash' is the wordplay.
'hole' becomes 'bore' (hole can mean to bore a hole).
'inverted' shows that the letters should be reversed in order.
'nothing' becomes 'O' (looks like zero - 0).
'in' means one lot of letters goes inside another.
'squash' becomes 'jam' (jam can mean to squash or bash).
'bore' written backwards gives 'erob'.
'erob'+'o'='erobo'
'erobo' placed within 'jam' is 'JEROBOAM'.
(Other definitions for jeroboam that I've seen before include "Very large wine bottle named after Israeli king" , "Very large wine bottle named after old king of Israel" , "large sparkling container?" , "a lot of bottle?" , "'Large wine bottle, equal to four standard ones (8)'" .)