From Wiktionary, the free dictionary
From beach + -ful.
beachful (plural beachfuls)
- Enough to fill a beach.
2007 February 5, Stuart Elliott, “Super Bowl Ads of Cartoonish Violence, Perhaps Reflecting Toll of War”, in New York Times[1]:The other, sillier spot presented a beachful of anthropomorphic crabs starting a Bud-centric version of a cargo cult.