throw down v.
1. [late 19C] to overcome, to prove too much for [wrestling imagery].
2. [late 19C+] (US) to discard, to abandon.
3. [late 19C-1920s] (US) to get someone into trouble, to betray.
4. in senses of SE throw down the gauntlet.
(a) [1910s+] (US) to challenge, in an aggressive manner; also attrib.
(b) [1980s+] (US black) to get into a fight with.
(c) [1970s+] (US teen) to challenge a rival, e.g. MC or breakdancer .
5. [1930s+] (US campus) to eat or drink voraciously.
6. [1980s+] (US black/campus) to enjoy oneself vigorously, to dance.
7. (US black) to perform music (without agressive subtext of sense 4c).
8. attrib. use of sense 6.
9. [1980s+] (US black/campus) to perform well; to work hard on a major project.
10. [1980s+] (US campus) to have sexual intercourse.
[late 19C+] (US Und.) to hold a gun on.
[late 17C+] to give up a project, a way of life.