From omnibus + -ful. <span class="searchmatch">omnibusful</span> (plural <span class="searchmatch">omnibusfuls</span> or omnibusesful) (dated) Enough to fill an omnibus. 1842 August 20, “The Provinces”, in The Spectator...
<span class="searchmatch">omnibusfuls</span> plural of <span class="searchmatch">omnibusful</span>...
unnumbered page: Due to the arrival of a busful of Bavarian tourists, the noise in the hotel lobby was deafening. <span class="searchmatch">omnibusful</span> amount sufficient to fill a bus...