(transitive) to sink (to submerge into a liquid; to cause to be submerged into a liquid) / (transitive) to sink, to dig, to plunge / (transitive, uncommon, literally and figurative) to deepen by digging / (intransitive) to sink, to founder [auxiliary essere] / (intransitive, figurative) to go broke, to be ruined [auxiliary essere] / (intransitive, figurative) to sink (into chaos, vice, etc.) [auxiliary essere]