Definition of alyssum
1 : any of a genus (Alyssum) of Eurasian herbs of the mustard family with small usually yellow racemose flowers —called also madwort
2 : sweet alyssum
Origin and Etymology of alyssum
New Latin, from Greek alysson, plant believed to cure rabies, from neuter of alyssos curing rabies, from a- + lyssa rabies
First Known Use: 1548
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