How many letters does the top answer for “a grasping structure on the limb of a crustacean or other arthropods” have?

The most common answer is nipper (6 letters).

Crossword clue: a grasping structure on the limb of a crustacean or other arthropods

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

nipper 6 letters wn-def

a grasping structure on the limb of a crustacean or other arthropods

pincer 6 letters wn-def

a grasping structure on the limb of a crustacean or other arthropods