Easy to carry - piano or desk? (8)
I believe the answer is:
portable
'easy to carry' is the definition.
'piano or desk?' is the wordplay.
'piano' becomes 'p'.
'desk?' becomes 'table' (desk is a kind of table).
'p'+'or'+'table'='PORTABLE'
(Other definitions for portable that I've seen before include "Designed to be easily carried" , "Handy - lightweight" , "Light enough to carry" , "easy to bear?" , "Easily transported" .)