What is the meaning of swamp?

noun

• Low land that is seasonally flooded; has more woody plants than a marsh and better drainage than a bog.
  • synonyms: swampland
• A situation fraught with difficulties and imponderables.
  • usage: "he was trapped in a medical swamp"

verb

• Drench or submerge or be drenched or submerged.
  • usage: "The tsunami swamped every boat in the harbor"
  • synonyms: drench
• Fill quickly beyond capacity; as with a liquid.
  • usage: "the basement was inundated after the storm"; "The images flooded his mind"
  • synonyms: deluge, flood, inundate