Definitions of counter:

• noun:   table consisting of a horizontal surface over which business is transacted
• noun:   a calculator that keeps a record of the number of times something happens
• noun:   a piece of leather forming the back of a shoe
• noun:   game equipment used in various card or board games
• noun:   the piece of leather that fits the heel
• noun:   (computer science) a register whose contents go through a regular series of states (usually states indicating consecutive integers)
• noun:   a person who counts things
• noun:   a piece of furniture that stands at the side of a dining room; has shelves and drawers
• noun:   a return punch (especially by a boxer)
• noun:   a quick reply to a question or remark (especially a witty or critical one)
• verb:   speak in response

  Example: "He countered with some very persuasive arguments"

• verb:   act in advance of; deal with ahead of time
• adjective:   indicating opposition or resistance
• adverb:   in the opposite direction

  Example: "Run counter"

• name:  A surname (very rare: popularity rank in the U.S.: #24796)