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
'one hanging around' is the wordplay.
'one' becomes 'kil' (I can't justify this - if you can you should believe this answer much more).
'hanging' becomes 'curtain'.
'around' means to look at the middle letters.
The middle letter of 'curtain' is 't'.
'kil'+'t'='KILT'
'may have' acts as a link.
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)" .)