Lucerne

n. alfalfa, leguminous plant grown to feed livestock (also lucern)

n. canton in Switzerland; city in Switzerland (capital of Lucerne Canton); village in Missouri (USA)

Lucerne is a city in Switzerland. It is the capital of the Canton of Lucerne and seat of the district with the same name. With a population of 57,890, Lucerne is the most populous city in Central Switzerland and focal point of the region. The city's agglomeration consists of 17 municipalities in three cantons with an overall population of nearly 200,000.
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Noun
1. important European leguminous forage plant with trifoliate leaves and blue-violet flowers grown widely as a pasture and hay crop
(synonym) alfalfa, Medicago sativa
(hypernym) medic, medick, trefoil
(part-meronym) alfalfa

n. Lucerne, a city of central Switzerland on the northern shore of the Lake of Lucerne

n. lamp, oil lamp