D defs.my
Entry 1 sense Webster, 1913

Waywiser

· Way·wis·er · IPA /ˈweɪˌwaɪ.zɚ/
01 n. An instrument for measuring the distance which one has traveled on the road; an odometer, pedometer, or perambulator.
  1. 1.
    An instrument for measuring the distance which one has traveled on the road; an odometer, pedometer, or perambulator.
    “The waywiser to a coach, exactly measuring the miles, and showing them by an index.” Evelyn.