C16: from Latin, a variant of aros wake-robin, from Greek aron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for arum
Arum, wild:—Position of the anthers, 141;progressive stages of change, 142.My Studio Neighbors
William Hamilton Gibson
And now the arum begins its great preparations for the act of flowering.The Evolutionist at Large
In the Arum maculatum, the number of ovules does not exceed six.
But we must continue our researches, and they bring us now to the Arum.
Another, and not less interesting species, is the Arum arisarum.