Longed to fix some need (5)
I believe the answer is:
pined
'longed' is the definition.
('pine' can be a synonym of 'long')
'fix some need' is the wordplay.
'fix' becomes 'pin' (to pin is to fix in place).
'some need' becomes 'ed' (I can't justify this - if you can you should give a lot more credence to this answer).
'pin'+'ed'='PINED'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for pined that I've seen before include "Became ill with longing" , "Starved" , "Longed; wasted (away)" , "Languished, yearned" .)