Definition of "plummet" in English

Noun

1. A piece of lead attached to a line, used in sounding the depth of water; a plumb bob or a plumb line.

2. Hence, any weight.

3. A piece of lead formerly used by schoolchildren to rule paper for writing (that is, to mark with rules, with lines).

4. A violent or dramatic fall.

5. A decline; a fall; a drop.

Verb

1. To drop swiftly, in a direct manner; to fall quickly.

   • After its ascent, the arrow plummeted to earth.