In jug, we're put out! (4)

I believe the answer is:

ewer

I'm a little stuck... Click here to teach me more about this clue!

'in jug' is the definition.
'ewer' can be an answer for 'jug' (type of vessel). I'm not certain of the 'in' bit.

'we're put out' is the wordplay.
'put out' is an anagram indicator.
'were' with letters rearranged gives 'EWER'.

Can you help me to learn more?

(Other definitions for ewer that I've seen before include "Large water-jug" , "water-carrier" , "Big jug" , "Decorative pitcher" , "Sort of jug" .)

I've seen this clue in the Evening Standard.

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