headway   (Sound)

The headway has 2 Senses.

• headway, clearance, headroom
• 運転時隔
• vertical space available to allow easy passage under something
• 何かの下の通行を楽にするのに利用できる垂直の空間

• headway, head
• 運転時隔, 前進
• forward movement; "the ship made little headway against the gale"
• 前方への進行