(intransitive) To die from suffocation while immersed in water or other fluid.

(transitive) To kill by suffocating in water or another liquid.

(intransitive) To be flooded: to be inundated with or submerged in (literally) water or (figuratively) other things; to be overwhelmed.

(transitive, figurative) To inundate, submerge, overwhelm.

(transitive, figurative, usually passive voice) To obscure, particularly amid an overwhelming volume of other items.