滅頂

to be drowned (figurative and literal)

to extinguish or put out / to go out (of a fire etc) / to exterminate or wipe out / to drown

apex / crown of the head / top / roof / most / to carry on the head / to push to the top / to go against / to replace / to substitute / to be subjected to (an aerial bombing, hailstorm etc) / (slang) to "bump" a forum thread to raise its profile / classifier for headwear, hats, veils etc