柯林斯詞典petroleum jelly 1. N-UNCOUNT Petroleum jelly is a soft, clear substance obtained from oil or petroleum. It is put on the skin to protect or soften it, or put on surfaces to make them move against each other easily. 凡士林 返回 petroleum jelly劍橋詞典a clear substance made from petroleum , used as a base for medicines that are rubbed into the skin , and also for making parts in a machine move easily against each other 石油凍，鑛脂 返回 petroleum jelly