A Scot may have one hanging around (4)
I believe the answer is:
kilt
'a scot' is the definition.
I know that 'scot' relates to this answer. I also know that both the answer and definition are singular nouns
'may have one hanging around' is the wordplay.
'may' becomes 'kl' (I can't justify this - if you can you should give a lot more credence to this answer).
'have' means one lot of letters goes inside another.
'one' becomes 'I' (Roman numeral).
'hanging' becomes 'curtain'.
'around' means to look at the middle letters.
The middle letter of 'curtain' is 't'.
'kl' placed around 'i' is 'kil'.
'kil'+'t'='KILT'
Can you help me to learn more?
(Other definitions for kilt that I've seen before include "Scots garment" , "Bone; circle line" , "Checked menswear" , "Scotsman's garment" , "Short skirt worn in Scotland (and by old Egyptian warriors)" .)