Headway

//ˈhɛdweɪ// noun

Definitions

Noun
  1. 1
    Movement ahead or forward. countable, uncountable
  2. 2
    forward movement wordnet
  3. 3
    Forward motion, or its rate. countable, uncountable
  4. 4
    vertical space available to allow easy passage under something wordnet
  5. 5
    The interval of time or distance between the fronts of two vehicles (e.g. buses) moving in succession in the same direction, especially along the same pre-determined route. countable

    "The whole of the main lines to be electrified were being equipped with four-aspect colour-light signals, automatically operated, where appropriate, and spaced to give a 5min headway throughout."

Show 3 more definitions
  1. 6
    Progress toward a goal. figuratively, uncountable
  2. 7
    The clearance beneath an object, such as an arch, ceiling or bridge; headroom. countable

    "So as not to impede navigation the two principal spans of the bridge were designed to provide a clear headway of 157 ft. above high water for a distance of 500 ft.; [...]."

  3. 8
    A crossheading. countable, uncountable

Etymology

Partly from Middle English hauedwei, from Old English hēafodweġ (“head-road, main-road”); partly as a shortening of ahead-way, the source of the nautical sense. By surface analysis, head + way.

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