A plant, possibly a regional or folk name for a weed or flowering plant, sometimes used to describe plants with dummy-like or nodding characteristics.
Compound of 'dummy' and 'weed.' This appears to be a regional or folk botanical name, with limited dictionary attestation. The exact plant reference is unclear without more context.
Plant names are wonderfully weird—'dummyweed' sits alongside 'devil's bit,' 'toad flax,' and 'cow parsnip' as folk names that seem random but usually had reasons (appearance, use, or local legends).
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