What is the meaning of cozy?

noun

• A padded cloth covering to keep a teapot warm.
  • synonyms: cosy, tea cosy, tea cozy

adjective

• Enjoying or affording comforting warmth and shelter especially in a small space.
  • usage: "a cozy nook near the fire"; "snug in bed"; "a snug little apartment"
  • synonyms: cosy, snug
• Having or fostering a warm or friendly and informal atmosphere.
  • usage: "had a cozy chat"; "a relaxed informal manner"; "an intimate cocktail lounge"; "the small room was cozy and intimate"
  • synonyms: intimate, informal
• Suggesting connivance.
  • usage: "a cozy arrangement with the police"