pea brain in English dictionary pea brain Meanings and definitions of "pea brain" adjective Alternative form of [i]peabrain[/i] noun Alternative form of [i]peabrain[/i] more Grammar and declension of pea brain pea brain (comparative more pea brain, superlative most pea brain) pea brain (plural pea brains) more Sample sentences with "pea brain" Declension Stem Match words all exact any Try again Authors