TRIQUETRUM

\tɹˈa͡ɪkwɛtɹəm], \tɹˈa‍ɪkwɛtɹəm], \t_ɹ_ˈaɪ_k_w_ɛ_t_ɹ_ə_m]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.