[ 副 ]
aback
■ by surprise 不意に
e.g. )
・taken aback by the caustic remarks 辛辣な意見に驚く
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裏帆
[ 副 ]
aback
■ having the wind against the forward side of the sails 帆の前面に対して風を受けること
e.g. )
・the ship came up into the wind with all yards aback その船は、帆桁全体を裏帆にして風に近づいた
→
裏帆