LAO-TSU Meaning of LAO-TSU in English Lao-Tsu BrE AmE ( also Lao-Tse )(6th century BC) a Chinese ↑ philosopher who is considered to be the person who began ↑ Taoism , and who wrote the Tao Te Ching . Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012