Abstract: The invention relates to a toy building element (1) for the construction of an elastic structure (2), comprising a plurality of at least three consecutive chain link type individual links (4). According to the invention it is intended that the connection (5) between the separate individual links (4) comprises a lesser reset force in relation to the bending elasticity (shear modulus G) than the reset force in relation to a tensile strength (elasticity modulus E). With this toy building element a claw working according to the bionic principle, a fin working according to this principle or a spring joint can be constructed.