Definitions of batch:

• noun:   a collection of things or persons to be handled together
• noun:   all the loaves of bread baked at the same time
• noun:   (often followed by `of') a large number or amount or extent

  Example: "A batch of letters"

• verb:   batch together; assemble or process as a batch
• name:  A surname (very rare: popularity rank in the U.S.: #65782)