Definitions of bid:

• noun:   an attempt to get something

  Example: "He made a bid to gain attention"

• noun:   (bridge) the number of tricks a bridge player is willing to contract to make
• noun:   a formal proposal to buy at a specified price
• noun:   an authoritative direction or instruction to do something
• verb:   make a serious effort to attain something

  Example: "His campaign bid for the attention of the poor population"

• verb:   make a demand, as for a card or a suit or a show of hands
• verb:   ask for or request earnestly

  Example: "The prophet bid all people to become good persons"

• verb:   propose a payment
• verb:   ask someone in a friendly way to do something
• verb:   invoke upon

  Example: "Bid farewell"