to fall from a high level or position
Prices have plummeted.
от English_dictionary 05 януари 2013
when a person jumps from a height of minimum 2 stories
Levi told Jeff to plummet when he broke the overhead in chem. class.
от the Chemistry kid 06 май 2004
to fall really fast straight down
susie just plummeted off that building and is laying in a bloody mass over there
от SN 04 август 2003