any of a genus (Apocynum
) of sometimes poisonous plants of the dogbane family, with opposite
leaves, small white or pink flowers, and milky juice
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'dogbane'so named because said to be poisonous to dogs