The term 'ข้างหลัง (khâang lǎng)' is used in Thai to indicate the position of an object or person which is 'behind' or 'at the back' of something or someone else. It's often used in the context of giving directions, describing the relative position or locations of objects or people. It is typically placed after the noun it refers to, similar to the structure of 'behind' in English, i.e. [Noun] + ข้างหลัง.