Hidari Tachi is the technique to hold and grip a sword with the left hand placed towards the Tsuba (a hand guard) and the right hand placed at the base of the hilt, meanwhile the right hand is usually placed towards a Tsuba and the left hand is placed at the base of a hilt in the art of swordsmanship.
左太刀（ひだりたち）とは、剣術において通常は右手を前、左手を後ろに刀を持つのを、逆に左手を前、右手を後ろに持つ技術のこと。