Longed for wood on the day (5)
I believe the answer is:
pined
'longed for' is the definition.
(I've seen this before)
'wood on the day' is the wordplay.
'wood' becomes 'pine' (pine is a kind of wood**).
'on' means one lot of letters go next to another.
'the day' becomes 'd'.
'pine'+'d'='PINED'
(Other definitions for pined that I've seen before include "Starved" , "Languished, yearned" , "Longed; wasted (away)" , "Became ill with longing" .)