Definitions for "Plummet"
A plumb bob or a plumb line. See under Plumb, n.
the metal bob of a plumb line
a form of plumb line in which the 'line' and weight are a single rigid piece.
Plummet is a House/Techno/Trance duo from Florida. The act consists of producer/remixer Eric B. Muniz (aka DJ X) and female vocalist, Cheramy Burgess.
drop sharply; "The stock market plummeted"
A piece of lead attached to a line, used in sounding the depth of water.
A piece of lead formerly used by school children to rule paper for writing.
method of ruling the guide lines on a page using red lead
Hence, any weight.