An old British slang term for a beggar or vagrant, or sometimes a sham/pretense (as in 'to sham Abraham').
Possibly from the Biblical Abraham, or from a character in a 16th-century poem. The exact origin is debated, but the term was used in Elizabethan theater and slang.
Shakespeare's audiences would have recognized 'abram' as insider slang for fake beggars who pretended to be insane—medieval con artists had their own secret vocabulary!
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