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arum

ar·um

arum

 
pronunciation:
a rm
part of speech: noun
definition 1: any of a family of plants, such as jack-in-the-pulpit, with arrow-shaped leaves and bearing a flower, at the tip of a long spike, that is enclosed by a hoodlike leaf.
definition 2: any of several cultivated plants related to the arum, such as the calla lily.