Measure Juliet put into pub's glass container (7)
I believe the answer is:
belljar
'glass container' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'measure juliet put into pub's' is the wordplay.
'measure' becomes 'ell' (historical unit of length).
'juliet' becomes 'J' (phonetic alphabet: alpha, bravo, charlie etc.).
'put into' is an insertion indicator.
'pub' becomes 'bar' (both are drinking establishments).
'ell'+'j'='ellj'
'ellj' going inside 'bar' is 'BELLJAR'.
Can you help me to learn more?
(Another definition for belljar that I've seen is " lab equipment".)