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waywiser

noun
way·wis·er | \ˈwāˌwīzə(r)\
plural -s

Definition of waywiser 

: an instrument (as an odometer or pedometer) for measuring the distance traversed by a walker, vehicle, or ship

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History and Etymology for waywiser

partial translation of Dutch wegwijzer guide, signpost, waywiser, literally, one that shows the way, from weg way + wijzer one that shows, from Middle Dutch wiser, from wisen to show; akin to Middle Dutch wijs wise, Old English wīs

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