The most common and most likely answer to this crossword clue is the 6 letter word ALMOND
I've seen this crossword clue in The Times
A
L
M
O
N
D
More clues leading to the result ALMOND
- Scottish fellow coming in shaved bald nut
- Old man cracked nut
- Mad on nuts, swallowing large nut
- Old man disturbed in tree
- Old man stewing fruit, usually known by another name
- Nut regularly mails, day after day
- Crafty lad gets around Scotsman for a nut
- Seed that’s old removed from a loch
- Seed of a fruit lacking moisture finally died
- Tree old man cultivated
Buddy explains!

The straight part
We know that "nut" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nut = almond.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 ALMOND mean?
ALMOND noun- A type of tree nut.
- A small deciduous tree in family Rosaceae, Prunus dulcis, that produces predominantly sweet almonds.
- Other plants that produce almond-like nuts:
- The colour of the kernel of an almond without its shell and thin seed coat, a creamy off-white colour.
- The color of an almond still covered by its skin, a shade of brown.
- Anything shaped like an almond; specifically, a tonsil.
- Brownish, resembling the colour of an almond nut.