Plummet

caduta

(decline, fall, drop)

declino

(decline, fall, drop)

filo a piombo

(lead on a line, plumb bob, plummet line)

piombino

(lead on a line, plumb bob, plummet line)

piombo

(any weight)

cadere a piombo

(to drop swiftly, in a direct manner; to fall quickly)

precipitare

(to drop swiftly, in a direct manner; to fall quickly)