the.com/tangram

means A puzzle of seven flat geometric pieces — cut from a square — that you rearrange into pictures of animals, people, or objects, using every piece exactly once.

from Ancient in practice, young in name: the puzzle itself comes from China, where it was known as qiqiaoban, the 'seven boards of skill.' The word 'tangram' only appeared in English in the early 1800s, and nobody is fully certain why — one guess ties it to 'Tang,' as in the Chinese dynasty, fused with the Greek '-gram' (something written or drawn), but this is speculation dressed as etymology. Whatever its true root, the word rode into the West on a wave of 19th-century fascination with Chinese puzzles, and stuck.