loadstone
(also lodestone), / ˈləudstəun; `lodˌston/ n
(a) [U] magnetic oxide of iron 磁性氧化铁.
(b) [C] piece of this used as a magnet 磁铁
(fig 比喻) She seems to be a loadstone for people in trouble, ie They come to her regularly for help. 对於患难中的人, 她彷佛是一块磁铁（人们常来求助）.