How many letters does the top answer for “relating to the palm of the hand or the sole of the foot” have?

The most common answer is palmar (6 letters).

Crossword clue: relating to the palm of the hand or the sole of the foot

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

palmar 6 letters wn-def

relating to the palm of the hand or the sole of the foot

volar 5 letters wn-def

relating to the palm of the hand or the sole of the foot