buttload

Etymology

From butt + load. Butt in this context may be possibly one or both of: * butt (“large wooden cask”) (Etymology 3) * butt (“two-wheeled cart”) (Etymology 5) Alternatively, the term may either be a corruption of English boatload or have been influenced by that term (except for the specific, West Country dialect sense). All senses above also synchronically reanalyzed as buttocksful.