D defs.my
Entry 2 senses Webster, 1913

Trackage

/trăk'-ĭj/ · Track·age · IPA /ˈtɹæk.ɪdʒ/
01 n. The act of tracking, or towing, as a boat; towage.
  1. 1.
    The act of tracking, or towing, as a boat; towage.
  2. 2.
    Lines of track, collectively; as, an extensive trackage.(Railroads)