Definitions from Wiktionary ( )

▸ noun:  (archaic, nautical) A piece of lead attached to a line, used in sounding the depth of water; a plumb bob or a plumb line.
▸ noun:  (archaic) Hence, any weight.
▸ noun:  (archaic) A piece of lead formerly used by schoolchildren to rule paper for writing (that is, to mark with rules, with lines).
▸ noun:  A violent or dramatic fall.
▸ noun:  (figuratively) A decline; a fall; a drop.
▸ verb:  (intransitive) To drop swiftly, in a direct manner; to fall quickly.

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