Bandwidth is a description of how much information can squeeze through a data pipe. For digital devices, the bandwidth is usually expressed in bits per second or bytes per second. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz). Your intranet has high bandwidth; your dial-up connection is low bandwidth. Also used anthropomorphically, e.g. "He has low bandwidth" is equivalent to "He is a taco short of a combo plate" or "Her elevator doesn't go all the way to the top."