The most common and most likely answer to this crossword clue is the 8 letter word SOFTWOOD
I've seen this crossword clue in Financial Times
S
O
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T
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Buddy explains!
The straight part
We know that "Pine for one" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pine for one = softwood.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SOFTWOOD mean?
SOFTWOOD noun- The wood from any conifer (or from Ginkgo), without regard to how soft this wood is.
- (in more general use) Wood of this kind but limited to those that are commercial timbers.
- The tree or tree species that yields this wood.
- Any commercial timber.