Definition of miner's lettuce
: a glossy green herb (Montia perfoliata synonym Claytonia perfoliata) of the purslane family especially of western North America that produces racemes of pink to white flowers subtended by a disk of two leaves united around the stem and is used as a salad green
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Merriam-Webster unabridgedWords at Play
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The first known use of miner's lettuce was in 1897
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