tailwind; following wind
A wind blowing in the same direction as a sailing vessel's course, favorable for sailing. Often used in nautical contexts.
See also: 追い風 (おいかぜ)
The ship sails on with a tailwind.
Compound of 帆 (ho, 'sail') and 風 (kaze, 'wind'). The reading ほかぜ is a straightforward combination of the kun'yomi readings.