headway

• POS: Noun
• HYPHEN: head=way

CIDE DICTIONARY

headway, n. 

•  The progress made by a ship in motion; hence, progress or success of any kind.  [1913 Webster]
•  Clear space under an arch, girder, and the like, sufficient to allow of easy passing underneath; clearance; headroom.  [1913 Webster]

OXFORD DICTIONARY

headway, n.
1 progress.
2 the rate of progress of a ship.
3 = HEADROOM 1.

THESAURUS

headway

Great Leap Forward, advance, advancement, advancing, amelioration, amendment, anabasis, ascent, bettering, betterment, boost, career, course, driftway, enhancement, enrichment, eugenics, euthenics, forward motion, forwardal, forwarding, furtherance, furthering, gain ground, get ahead, get going, go, go ahead, go-ahead, improvement, leeway, lift, make headway, march, melioration, mend, mending, move forward, ongoing, onward course, passage, pickup, preferment, proceed, proficiency, progress, progression, progressiveness, promotion, recovery, restoration, revival, rise, rolling, rolling on, steerageway, sternway, travel, upbeat, uplift, upping, upswing, uptrend, upward mobility, way

ROGET THESAURUS

headway

Navigation

N navigation, aquatics, boating, yachting, ship, oar, paddle, screw, sail, canvas, aileron, natation, swimming, fin, flipper, fish's tail, aerostation, aerostatics, aeronautics, balloonery, balloon, ballooning, aviation, airmanship, flying, flight, volitation, wing, pinion, rocketry, space travel, astronautics, orbital mechanics, orbiting, voyage, sail, cruise, passage, circumnavigation, periplus, headway, sternway, leeway, fairway, mariner, flight, trip, shuttle, run, airlift, sailing, volant, aerostatic, seafaring, nautical, maritime, naval, seagoing, coasting, afloat, navigable, aerial, aeronautic, grallatory, under way, under sail, under canvas, under steam, on the wing, in flight, in orbit, bon voyage, spread the thin oar and catch the driving gale.

Progression

N progress, progression, progressiveness, advancing, advance, advancement, ongoing, flood, tide, headway, march, rise, improvement, advancing, progressive, profluent, advanced, forward, onward, forth, on, ahead, under way, en route for, on one's way, on the way, on the road, on the high road, on the road to, in progress, in mid progress, in transitu, vestigia nulla retrorsum, westward the course of empire takes its way.