Alyssum (n.) Look up Alyssum at Dictionary.com
genus name for plants of the mustard family, 1550s, from Latin alysson, from Greek alysson, which is perhaps the neuter of adjective alyssos "curing madness," from privative prefix a- + lyssa "madness, martial rage, fury," an abstract word probably literally "wolf-ness" and related to lykos "wolf" (see wolf (n.)); but some see a connection with "light" words, in reference to the glittering eyes of the mad.