What is the meaning of coolness?

noun

• Calm and unruffled self-assurance.
  • usage: "he performed with all the coolness of a veteran"
  • synonyms: imperturbability, imperturbableness
• The property of being moderately cold.
  • usage: "the chilliness of early morning"
  • synonyms: chilliness, nip
• Fearless self-possession in the face of danger.
  • synonyms: nervelessness
• A lack of affection or enthusiasm.
  • usage: "a distressing coldness of tone and manner"
  • synonyms: coldness, frigidity, frigidness, iciness, chilliness