Pierce upwards with hole in squash bottle (8)
I believe the answer is:
jeroboam
'bottle' is the definition.
(I know that jeroboam is a type of wine bottle)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for jeroboam that I've seen before include "a lot of bottle?" , "Four-times bottle size" , "Ancient king" , "Very large wine bottle named after old king of Israel" , "large sparkling container?" .)