What is the meaning of rickety?

adjective

• Inclined to shake as from weakness or defect.
  • usage: "a rickety table"; "a wobbly chair with shaky legs"; "the ladder felt a little wobbly"; "the bridge still stands though one of the arches is wonky"
  • synonyms: shaky, wobbly, wonky
• Affected with, suffering from, or characteristic of rickets.
  • usage: "rickety limbs and joints"; "a rachitic patient"
  • synonyms: rachitic
• Lacking bodily or muscular strength or vitality.
  • usage: "a feeble old woman"; "her body looked sapless"
  • synonyms: decrepit, debile, feeble, infirm, sapless, weak, weakly