plumb n. 铅锤
plumber n. 管道工(plumb+er人,不少管道用铅做成)
plummet v. 突然下落(铅很重,所以下落很快)
plimp a. 丰满的,胖乎乎的(plump=plumb;铅锤是圆的,所以是“丰满的”)
plump v. 倒下,坠下
【来源及含义】Latin: lead, the metal; Pb
【同源单词】aplomb, plum, plumb, plumb, plumb, plumb bob