Crossword Genius

Implement excessively large (4)

Ross

I believe the answer is:

tool

'implement' is the definition.
(I know that implement can be written as tool)

'excessively large' is the wordplay.
'excessively' becomes 'too' (to too great a degree).
'large' becomes 'L' (eg in clothes sizes).
'too'+'l'='TOOL'

(Other definitions for tool that I've seen before include "Instrument, implement" , "Implement - agency" , "Maybe saw" , "Person exploited" , "organ" .)

I've seen this clue in The Sun.
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