Dictionary.net

• trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets; naturalized in North America; sometimes placed in genus Nepeta

2006 - WordNet 3.0
By Princeton University

• trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets; naturalized in North America; sometimes placed in genus Nepeta

2011 - English Dictionary Database
By DataStellar Co., Ltd