Plural of barrelful; multiple amounts each equal to what one barrel can hold.
Regular English plural of barrelful, formed by adding -s to the -ful noun. This is one of two acceptable plural forms (the other being 'barrels full').
The debate over whether to say 'barrelfuls' or 'barrels full' is a classic argument among English speakers—linguists accept both, but 'barrelfuls' is considered more modern and is gradually winning out over the older 'barrels full.'
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