Plum″met (?), n. [OE. plommet, OF. plommet, fr. plom, plum, lead, F. plomb. See Plumb.] 1. A piece of lead attached to a line, used in sounding the depth of water.
I'll sink him deeper than e'er plummet sounded. Shak.
2. A plumb bob or a plumb line. See under Plumb, n.
3. Hence, any weight.
4. A piece of lead formerly used by school children to rule paper for writing.
Plummet line, a line with a plummet; a sounding line.