A pine from end to end? (5)
I believe the answer is:
along
'from end to end?' is the definition.
(I've seen this before)
'a pine' is the wordplay.
'pine' becomes 'long' (to pine for something is to long for it).
'a'+'long'='ALONG'
(Other definitions for along that I've seen before include "Lining" , "Throughout; onward" , "By the side of" , "together" , "From one end to the other" .)