piton
noun /ˈpiːtɒn/
/ˈpiːtɑːn/
- a short pointed piece of metal used in rock-climbing. The piton is fixed into the rock and has a rope attached to it through a ring at the other end.
（登山用的）钢锥，岩钉 词源late 19th cent.: from French, literally ‘eye bolt’.