(1):

(n.) A lamp.

(2):

(n.) A leguminous plant (Medicago sativa), having bluish purple cloverlike flowers, cultivated for fodder; - called also alfalfa.

(3):

(n.) A sort of hunting dog; - perhaps from Lucerne, in Switzerland.

(4):

(n.) An animal whose fur was formerly much in request (by some supposed to be the lynx).