regular convex solid
Noun

Any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent (synset 113939032)
hypernym: polyhedron  a solid figure bounded by plane polygons or faceshyponym:
 regular tetrahedron  a tetrahedron with four equilateral triangular faces
 cube, regular hexahedron  a hexahedron with six equal squares as faces
 regular dodecahedron  a dodecahedron with twelve regular pentagons as faces
 regular octahedron  an octahedron with eight equilateral triangles as faces
 regular icosahedron  an icosahedron with twenty equilateral triangles as faces
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