a triangular fore-and-aft sail with its foot along the gaff and its luff on the topmast
同义词：gaff topsail??/??fore-and-aft topsail
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。