Keep shower curtains outside for event (6)
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I believe the answer is:
retain
'keep' is the definition.
(retaining is a kind of keeping)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for retain that I've seen before include "'Hold, keep back (6)'" , "Hold onto" , "Not relinquish" , "Keep in Tirane" , "Save" .)
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