Definitions of sponsor:

  • noun:   someone who supports or champions something
  • noun:   an advocate who presents a person (as for an award or a degree or an introduction etc.)
  • verb:   assume sponsorship of
  • verb:   assume responsibility for or leadership of
    Example: "The senator announced that he would sponsor the health care plan"
  • verb:   do one's shopping at; do business with; be a customer or client of