From O'Neill + -ian. <span class="searchmatch">O'Neillian</span> (comparative more <span class="searchmatch">O'Neillian</span>, superlative most <span class="searchmatch">O'Neillian</span>) Of or relating to Eugene O'Neill (1888–1953), American playwright...
seat of Holt County, Nebraska, United States. O'Neill colony O'Neill cylinder <span class="searchmatch">O'Neillian</span> O'Neillism O'Neillite Lionel, lionel, loline, niello, nollie...