Abraham wears a couple of large and small tags (6)
I believe the answer is:
labels
'tags' is the definition.
(I know this)
'abraham wears a couple of large and small' is the wordplay.
'abraham' becomes 'abe'.
'wears' means one lot of letters goes inside another.
'a couple of large' becomes 'll' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' is a charade indicator (letters next to each other).
'small' becomes 's' (abbreviation - e.g. clothes size).
'abe' put into 'll' is 'label'.
'label'+'s'='LABELS'
Can you help me to learn more?
(Other definitions for labels that I've seen before include "'Trade names, of designers say (6)'" , "Tags; classifies" , "Present tags" , "Appends a category to something or someone" , "tags,brands" .)