chelicerae
‘piercing appendages in the proboscis of arachnids and some other arthropods’
Lexical development traced from the Tamil root:
Mod.Lat. chelicera < Gk. khēlē ‘crab claw, talon, pincers; cloven hoof of cattle, horse’s hoof’ (according to Watkins) < keras ‘horn’ < suhr < ker- < Tamil kaṭu