Impressive print of thigh or lap perhaps (10)

I believe the answer is:

lithograph

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'impressive print' is the definition.
'lithograph' can be an answer for 'print' (lithograph is a kind of print). I am not sure about the 'impressive' bit.

'thigh or lap perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'thigh'+'or'+'lap'='thighorlap'
'thighorlap' is an anagram of 'LITHOGRAPH'.

'of' is the link.

Can you help me to learn more?

(Other definitions for lithograph that I've seen before include "illustration" , "Type of print" .)

I've seen this clue in The Globe and Mail.

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