To Suddenly Drop From the Sky at a Great Speed

This page is the CodyCross answer for the clue below from Department Store, Group 507, Puzzle 1 (Picture Frames).

Question is: To Suddenly Drop From the Sky at a Great Speed

and the answer is: PLUMMET

Word Meaning:

PLUMMET — (archaic, nautical) A piece of lead attached to a line, used in sounding the depth of water; a plumb bob or a plumb line.

Definitions from Wiktionary.