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.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI