ATRIOVENTRICULAR VALVE
\ˌatɹɪˌə͡ʊvɪntɹˈɪkjʊlə vˈalv], \ˌatɹɪˌəʊvɪntɹˈɪkjʊlə vˈalv], \ˌa_t_ɹ_ɪ__ˌəʊ_v_ɪ_n_t_ɹ_ˈɪ_k_j_ʊ_l_ə v_ˈa_l_v]\
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.