grave1
Pronunciation: /greɪv/
noun
- a hole dug in the ground to receive a coffin or corpse, typically marked by a stone or mound: the coffin was lowered into the grave a mass grave
- (often the grave) used as an allusive term for death: life beyond the grave
- a place where a broken or discarded object lies: they lifted the aircraft from its watery grave

Phrases
-
dig one's own grave
- do something foolish which causes one’s downfall: you’re digging your own grave by walking away right now
-
(as) silent (or quiet) as the grave
- extremely quiet: the huge room was as silent as the grave
-
take the (or one's etc.) secret to the grave
- die without revealing a secret: if there ever was a body, he took the secret to the grave
-
turn (North American also roll over or turn over) in one's grave
- used to express the opinion that something would have caused anger or distress in someone who is now dead: if my father saw the weeds he would turn in his grave

Origin:
Old English græf, of Germanic origin; related to Dutch graf and German Grab