a peg or spike driven into a rock or crack to support a climber or a rope 登山锥,登山钉 ■(the Pitons)two conical mountains in St Lucia in the Caribbean. Reaching a height of 798 m (2,618 ft) and 750 m (2,461 ft), they rise up out of the sea just off the SW coast of the island 皮顿山(加勒比海圣卢西亚岛的两座圆锥形山峰,海拔分别为798米[即2,618英尺]和750米[即2,461英尺]位于该岛西南近海之中)