[tan.gram] n [perh. fr. Chin (Beijing) tang Chinese + E -gram] (ca. 1864): a Chinese puzzle made by cutting a square of thin material into five triangles, a square, and a rhomboid which are capable of being recombined in many different figures
TANGRAM
Meaning of TANGRAM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012