double-barrelledadj1 (of a gun) having two barrels （指枪炮）双管的, 双筒的.2 (Brit) (of a surname) having two parts, usu joined by a hyphen (as in Day-Lewis) （指姓）由两部分组成的（其间通常用连字符连结, 如Day-Lewis）.
牛津英汉双解词典