loadstone

详细解释:n. 天然磁石, 有吸引力之物, 吸引人的东西
【化】 极磁铁矿; 天然磁石

英语解释：

名词 loadstone:

a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically同义词：lodestone