[C] a thin object with a sharp point, especially a pointed piece of metal, wood, etc. 尖状物；尖头；尖刺
a row of iron spikes on a wall
墙头的一排尖铁
Her hair stood up in spikes.
她的头发一缕一缕地翘着。
[C] a long pointed group of flowers that grow together on a single stem 穗；穗状花序
[C, usually singular] (informal, especially NAmE) a sudden large increase in sth 猛增；急升
a spike in oil prices
油价的急剧上涨