Liking a piano pretty small (8)

I believe the answer is:

appetite

I'm a little stuck... Click here to teach me more about this clue!

'liking' is the definition.
(I've seen this in another clue)

'a piano pretty small' is the wordplay.
'piano' becomes 'p' (musical abbreviation).
'pretty small' becomes 'petite' (similar in meaning. I am not sure about the 'pretty' bit.).
'a'+'p'+'petite'='APPETITE'

Can you help me to learn more?

(Other definitions for appetite that I've seen before include "enthusiasm" , "demand" , "Natural desire to satisfy a need" , "thirst" , "Justification for dining" .)

I've seen this clue in The Telegraph.

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