A plant with purple flowers that is commonly grown as livestock feed and is also called alfalfa; it's very nutritious for farm animals.
From French 'luzerne,' which came from Occitan 'luserna,' possibly from a Ligurian word related to 'light.' The plant's name may refer to its bright appearance in fields.
Lucerne is one of the world's most important crops, yet most people have never heard of it—it feeds billions of livestock and actually improves soil by adding nitrogen back to the earth naturally.
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