Friar's cowl

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(Bot.) an arumlike plant (Arisarum vulgare) with a spathe or involucral leaf resembling a cowl.

See also: Friar

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
What does it do: Friar's Cowl, like most members of the Aracaceae, contains Calcium oxalates, known as raphides, which are tiny, needle like crystals that cause severe irritation on contact with the eyes and mucous membranes, and in some cases where the juice has been ingested will cause the tongue to swell dramatically, that can in rare cases, lead to suffocation.
Although Friar's Cowl is poisonous, in times of famine the walnut shaped tubers are eaten; the poison is neutralised by drying and washing.