The most common and most likely answer to this crossword clue is the 8 letter word SUPINATE
I've seen this crossword clue in The Guardian
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More clues leading to the result SUPINATE
Buddy explains!
The straight part
We know that "Turn up for palmist" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case turn up for palmist = supinate.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 SUPINATE mean?
SUPINATE verb- To twist the forearm so as to turn the palm of the hand backwards if the forearm is pointing up, upwards if the forearm is horizontal, or forwards if the arm is pointing down; to twist the forearm by contracting the biceps brachii; to twist the right forearm clockwise or the left forearm counterclockwise.
- To twist the foot so the weight is on the outer edge.