waywiser Meaning, Definition & Usage

Way"wis`er noun
Etymology
Cf. G. wegweiser a waymark, a guide; weg way + weisen to show, direct.
Definitions
  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.

Webster 1913