What is the meaning of suggestion?

noun

• An idea that is suggested.
  • usage: "the picnic was her suggestion"
• A proposal offered for acceptance or rejection.
  • usage: "it was a suggestion we couldn't refuse"
  • synonyms: proposition, proffer
• A just detectable amount.
  • usage: "he speaks French with a trace of an accent"
  • synonyms: trace, hint
• Persuasion formulated as a suggestion.
  • synonyms: prompting
• The sequential mental process in which one thought leads to another by association.
• The act of inducing hypnosis.
  • synonyms: hypnotism, mesmerism