Gambling accessories, mostly, including small coin? (4)
I believe the answer is:
disc
'coin?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'gambling accessories mostly including small' is the wordplay.
'gambling accessories mostly' becomes 'dic' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'including' means one lot of letters goes inside another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'dic' going around 's' is 'DISC'.
Can you help me to learn more?
(Other definitions for disc that I've seen before include "Circular flat structure in the spine" , "Back part" , "something moving in the spine" , "Protein-constituent acid" , "Capital of India" .)