Entries linking to barrelful
"cylindrical vessel or cask, generally bulging in the middle and made of wooden staves bound by hoops," c. 1300, from Old French baril "barrel, cask, vat" (12c.), with cognates in all Romance languages (Italian barile, Spanish barril, etc.), but of unknown origin. Also a measure of capacity of varying quantity. Meaning "metal tube of a gun" is from 1640s. Barrel-roll (n.) in aeronautics is from 1920. To be over a barrel figuratively, "in a helpless or vulnerable condition," is by 1914 and might suggest corporal punishment.
It is rare in Old English and Middle English, where full was much more commonly attached at the head of a word (for example Old English fulbrecan "to violate," fulslean "to kill outright," fulripod "mature;" Middle English had ful-comen "attain (a state), realize (a truth)," ful-lasting "durability," ful-thriven "complete, perfect," etc.).