Something other than rum in each bridge-player's hand (2-7)
I believe the answer is:
no-trumper
'something other than rum in each bridge-player's hand' is the definition.
I can't tell whether this definition defines the answer.
'other than rum in each bridge-player's hand' is the wordplay.
'other than' becomes 'not'.
'in each bridge player's' becomes 'pe' (I can't justify this - if you can you should give a lot more credence to this answer).
'hand' becomes 'R' (abbreviation for right, as in the right-hand side).
'not'+'rum'+'pe'+'r'='NO-TRUMPER'
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