PLUM'MET, noun [See Plumb.]
1. A long piece of lead attached to a line, used in sounding the depth of water.
2. An instrument used by carpenters, masons, etc. in 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.
3. Any weight.
4. A piece of lead used by school boys to rule their paper for writing.