'Tangram' definitions:

Definition of 'tangram'

(from WordNet)
noun
A Chinese puzzle consisting of a square divided into seven pieces that must be arranged to match particular designs

Definition of 'Tangram'

From: GCIDE
  • Tangram \Tan"gram\, n. [Cf. Trangram.] A Chinese toy made by cutting a square of thin wood, or other suitable material, into seven pieces, as shown in the cut, these pieces being capable of combination in various ways, so as to form a great number of different figures. It is now often used in primary schools as a means of instruction. [1913 Webster]