Crossword Genius

I creep terribly as 'Tory Boy' Andrew (6)

Ross

I believe the answer is:

pierce

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'tory boy andrew' is the definition.
I can't tell whether this definition defines the answer.

'i creep terribly' is the wordplay.
'terribly' indicates anagramming the letters.
'i'+'creep'='icreep'
'icreep' with letters rearranged gives 'PIERCE'.

'as' is the link.

Can you help me to learn more?

(Other definitions for pierce that I've seen before include "Cut a way through" , "Possibly drill" , "Cut through with a sharp instrument" , "Impale" , "- Brosnan; (to) hole" .)

I've seen this clue in The Independent.
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