2. Sign [qi ā n]: (1) Write your name or mark on the document or bill to show your responsibility. (2) Put forward the main ideas or opinions in simple words. (3) Slim bamboo pieces or bamboo sticks engraved with characters such as divination, gambling and competition. (4) a small piece of paper used as a sign. (5) Small sharp sticks cut from bamboo or wood. (6) coarse seam.