Long needle supplier (4)
I believe the answer is:
pine
This clue might be a double definition.
'long' is the first definition.
(to pine for someone is to long for them)
'needle supplier' is the second definition.
'pine' can be an answer for 'needle' (thesaurus). I'm unsure of the 'supplier' bit.
Can you help me to learn more?
(Other definitions for pine that I've seen before include "Yen - tree" , "A tree to grieve for" , "Scots fir" , "Long for the conifer?" , "Coniferous tree" .)