Crossword Genius

Computer accessory's second purpose (5)

Ross

I believe the answer is:

mouse

'computer accessory's' is the definition.
(I've seen this before)

'second purpose' is the wordplay.
'second' becomes 'mo' (both are short periods of time).
'purpose' becomes 'use' (synonyms).
'mo'+'use'='MOUSE'

(Other definitions for mouse that I've seen before include "Computer accessory" , "Proverbially quiet rodent" , "Squeaky creature" , "One sitting by computer" , "whose movements are captured on screen" .)

I've seen this clue in The Telegraph.
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