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noun
slang US1A stupid or foolish person; also as a term of abuse. Compare "pinhead", "pea-brain", etc.
2A particularly small head. Also: a person with such a head, especially as part of a generally small or thin frame; frequently as a term of mild abuse.
Origin
Late 19th century; earliest use found in Ohio Democrat (New Philadelphia, Ohio). From peanut + head.
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