What could replace a super tom at work? (9)

I believe the answer is:

mousetrap

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'what could replace' is the definition.
I can't judge whether this defines the answer.

'a super tom at work?' is the wordplay.
'at work?' indicates an anagram (I've seen 'at work' mean this).
'a'+'super'+'tom'='asupertom'
'asupertom' is an anagram of 'MOUSETRAP'.

Can you help me to learn more?

(Other definitions for mousetrap that I've seen before include "This may take the Mickey" , "Cheese-baited snare" , "Poor-quality cheese" , "Boring hard cheese (informal)" , "Anti-rodent device" .)

I've seen this clue in The Times.

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