Type and prepare to post (5)

I believe the answer is:

stamp

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'type' is the definition.
(thesaurus)

'prepare to post' is the wordplay.
'prepare' becomes 'stam' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to post' becomes 'P' (abbreviation as in PS for postscript).
'stam'+'p'='STAMP'

'and' acts as a link.

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(Other definitions for stamp that I've seen before include "Evidence of payment of postage duty" , "contributions?" , "Impress (a pattern)" , "Imprint, brand" , "Bring foot down hard" .)

I've seen this clue in the Evening Standard.

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