a0c1aa44_Unity___Manual__Mesh_Renderer__Function_
[Property:] Cast Shadows [Function:] 
If enabled, the mesh will create shadows when a shadow-casting Light shines on it. The options are On and Off to enable/disable shadows, Two Sided to allow shadows to be cast from either side of the mesh (ie, backface culling is not taken into account) and Shadows Only (ie, the shadows should be visible but not the mesh itself).
Unity - Manual: Mesh Renderer
Function: