dialectal (northern) English bogle. <span class="searchmatch">bogill</span> (plural bogillis) A supernatural being of an ugly or terrifying aspect; a bugbear “<span class="searchmatch">bogill</span>” in Scots Dictionary...
hobgoblin”) which is traced alternatively to: a Celtic root found in Scots <span class="searchmatch">bogill</span> (“goblin, bugbear”) and obsolete Welsh bwg (“ghost, hobgoblin”); compare...