A short cotton garment for an Arab (5)

I believe the answer is:

adeni

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'garment for an arab' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'a short cotton' is the wordplay.
'short' means to remove the last letter.
'cotton' becomes 'denim' (I have seen 'Twilled cotton ' mean 'denim' so perhaps 'cotton' could also mean 'denim').
'denim' with its final letter removed is 'deni'.
'a'+'deni'='ADENI'

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I've seen this clue in The Times.

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