What is the meaning of tottering?

verb

• Move without being stable, as if threatening to fall.
  • usage: "The drunk man tottered over to our table"
  • synonyms: totter
• Walk unsteadily.
  • usage: "small children toddle"
  • synonyms: toddle, coggle, totter, dodder, paddle, waddle
• Move unsteadily, with a rocking motion.
  • synonyms: teeter, seesaw, totter

adjective

• Unsteady in gait as from infirmity or old age.
  • usage: "a tottering skeleton of a horse"; "a tottery old man"
  • synonyms: tottery
• Of structures or institutions. ( having lost stability; failing or on the point of collapse)
  • usage: "a tottering empire"