What is the meaning of get down?

verb

• Lower (one's body) as by kneeling.
  • usage: "Get down on your knees"
• Move something or somebody to a lower position.
  • usage: "take down the vase from the shelf"
  • synonyms: lower, take down, let down, bring down
• Alight from (a horse.
  • synonyms: unhorse, dismount, light, get off
• Pass through the esophagus as part of eating or drinking.
  • usage: "Swallow the raw fish-it won't kill you"
  • synonyms: swallow
• Lower someone's spirits; make downhearted.
  • usage: "These news depressed her"; "The bad state of her child's health demoralizes her"
  • synonyms: depress, deject, cast down, dismay, dispirit, demoralize, demoralise
• Put down in writing; of texts, musical compositions, etc..
  • synonyms: write down, set down, put down
• Take the first step or steps in carrying out an action.
  • usage: "We began working at dawn"; "Who will start"; "Get working as soon as the sun rises"; "The first tourists began to arrive in Cambodia"; "He began early in the day"; "Let's get down to work now"
  • synonyms: begin, get, start out, start, set about, set out, commence