Crossword Genius

Switch end, playing (6)

Ross

I believe the answer is:

button

'switch' is the definition.
(button is a kind of switch)

'end playing' is the wordplay.
'end' becomes 'butt' (I've seen this before).
'playing' becomes 'on'.
'butt'+'on'='BUTTON'

(Other definitions for button that I've seen before include "Jenson --, Formula One driver" , "On-screen control" , "Tot bun up for a fastener" , "Tot bun up for a fastening device" , "Fastener to fit through a hole" .)

I've seen this clue in The Telegraph.
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