What is the meaning of bog?

noun

• Wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for cultivation but can be cut and dried and used for fuel.
  • synonyms: peat bog

verb

• Cause to slow down or get stuck.
  • usage: "The vote would bog down the house"
  • synonyms: bog down
• Get stuck while doing something.
  • usage: "She bogged down many times while she wrote her dissertation"
  • synonyms: bog down