pedipalp
/ˈpedɪpælp/noun
- Zoology each of the second pair of appendages attached to the cephalothorax of most arachnids. They are variously specialized as pincers in scorpions, sensory organs in spiders, and locomotory organs in horseshoe crabs.【动】（蛛形动物的）须肢。
词源
early 19th cent.: from modern Latin pedipalpi (plural), from Latin pes, ped-'foot'+palpus 'palp'.