CONCAVE POLYHEDRON
\kɒnkˈe͡ɪv pˌɒlɪhˈiːdɹən], \kɒnkˈeɪv pˌɒlɪhˈiːdɹən], \k_ɒ_n_k_ˈeɪ_v p_ˌɒ_l_ɪ_h_ˈiː_d_ɹ_ə_n]\
Word of the day
Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.