(1a) To be defeated or embarrassed.
(1b) To be owned, pwn3d, insulted, or served.
(2) To be exceptionally exhausted or out of sorts.
(2a) To be drunk or otherwise inebriated.
(3) Indicative of a sound performance or show of extreme musical (usually guitar) bravado. Shreds.
(1) Steve Vai f'n thranged you in Satan's guitar competition!
(2) We were so thranged after the show last night that we fell asleep before the Late Late Show.
(3) Steve Vai totally thrangs.