秒杀

秒杀	miǎo shā	(Internet) flash sale / (sports or online gaming) rapid dispatch of an opponent
秒	miǎo	second (unit of time) / arc second (angular measurement unit) / (coll.) instantly
杀	shā	to kill; to slay; to murder; to attack / to weaken; to reduce / (dialect) to smart / (used after a verb) extremely