from
The Collaborative International Dictionary of English v.0.48
Plummet \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.
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I'll sink him deeper than e'er plummet sounded.
--Shak.
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2. A plumb bob or a plumb line. See under {Plumb}, n.
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3. Hence, any weight.
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4. A piece of lead formerly used by school children to rule
paper for writing.
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{Plummet line}, a line with a plummet; a sounding line.
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