Play dead and one's left (7)
I believe the answer is:
disport
'play' is the definition.
(disporting is a kind of playing)
'dead and one's left' is the wordplay.
'dead' becomes 'd'.
'and' is a charade indicator (letters next to each other).
'one's' becomes 'is' (roman numeral).
'left' becomes 'port' (left side of a ship - opposite of starboard).
'd'+'is'+'port'='DISPORT'
(Other definitions for disport that I've seen before include "Cavort, lark about" , "to have a good time" , "Play about" , "Amuse" .)