tack tack head head to clew head and clew tack peak clew Tack clew leech leech luff luff head to clew clew [en] leading edge of a sail one corner of a triangular sail clew clew Parts of a sail. foot foot head and clew head foot luff clew http://en.wikipedia.org/wiki/Parts_of_a_sail head ラフ head head and clew clew clew ラフ clew luff battens peak clew peak battens head head leech peak tack English foot tack tack tack head luff luff tack clew clew clew peak tack tack Luff English luff tack Tack clew clew tack tack roach tack leech