SACRAL VERTEBRA

\sˈakɹə͡l vˈɜːtɪbɹə], \sˈakɹə‍l vˈɜːtɪbɹə], \s_ˈa_k_ɹ_əl v_ˈɜː_t_ɪ_b_ɹ_ə]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd