to be inundated or buried (by water, sand, etc.); to fall into oblivion or obscurity

to sink into oblivion; to be forgotten; to be buried or hidden away

to fall into obscurity; to be buried and forgotten by the world; describes people or things that have become completely unknown

(literary) an extremely long time ago; through the passage of many years

to be buried or neglected; to have no chance to rise in the world or fulfill one's ambitions