plummet
A long piece of lead attached to a line, used in sounding the depth of water.
plummet
An instrument used by carpenters, masonsin adjusting erections to a perpendicular line, and with a square, to determine a horizontal line. It consists of a piece of lead fastened to a line.
plummet
Any weight.
plummet
A piece of lead used by school boys to rule their paper for writing.