Fatty Arbuckle's coat worn by alkie having taken hem up a little (7)

I believe the answer is:

adipose

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'fatty' is the definition.
(synonyms)

I don't understand the rest of the clue.

(Other definitions for adipose that I've seen before include "Of tissue, fatty in substance" , "Relating to fat" , "I soaped up with fatty kind of tissue" , "Containing fat" , "Relating to fatty tissue" .)

I've seen this clue in The Guardian.

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