Noun overture has 3 senses
  1. overture - orchestral music played at the beginning of an opera or oratorio
    --1 is a kind of
  2. preliminary, overture, prelude - something that serves as a preceding event or introduces what follows; "training is a necessary preliminary to employment"; "drinks were the overture to dinner"
    --2 is a kind of origin, origination, inception
  3. overture, advance, approach, feeler - a tentative suggestion designed to elicit the reactions of others; "she rejected his advances"
    --3 is a kind of suggestion, proposition, proffer