Reportedly, something green on the table — trees (4)
I believe the answer is:
bays
'trees' is the definition.
(bay is a type of tree)
'reportedly something green on the table' is the wordplay.
'reportedly' shows a homophone (sound like).
'something green on the table' becomes 'baize' (fabric covering a snooker table).
'baize' sounds like 'BAYS'.
(Other definitions for bays that I've seen before include "Laurel trees" , "Inlets; barks" , "Indentations of a shoreline" .)