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.
A plumb bob or a plumb line. See under Plumb, n.
Hence, any weight.
A piece of lead formerly used by school children to rule paper for writing. Plummet line, a line with a plummet; a sounding line.
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