COLUMBUS DAY

\kəlˈʌmbəs dˈe͡ɪ], \kəlˈʌmbəs dˈe‍ɪ], \k_ə_l_ˈʌ_m_b_ə_s d_ˈeɪ]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.