milepost
From Longman Dictionary of Contemporary EnglishRelated topics: Transportmilepostmile‧post /ˈmaɪlpəʊst $ -poʊst/ noun [countable] American English 1 TTDISTANCEa post next to a road or railway that shows the distance in miles to the next town2 a milestone(1)Examples from the Corpusmilepost• Far from being a defeat, Reykjavik was a milepost, a turning point in disarmament negotiations.• Victoria and I have undoubtedly passed that milepost.