裏帆
う
ら
ほ
Meanings
1
sail with the wind at its back
Nautical term for a sail that is filled from behind, pushing the boat forward.
We sail with the wind at our back, the sail filled from behind.
2
aback
Adverbial use describing a sail pressed back against the mast by a headwind, often unintentionally.
The sail was taken aback by a sudden headwind.