Por·tu·la·ca n.  Bot. A genus of polypetalous plants; also, any plant of the genus.
  Note: ☞ Portulaca oleracea is the common purslane. Portulaca grandiflora is a South American herb, widely cultivated for its showy crimson, scarlet, yellow, or white, ephemeral blossoms.
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  Purs·lane n.  Bot. An annual plant (Portulaca oleracea), with fleshy, succulent, obovate leaves, sometimes used as a pot herb and for salads, garnishing, and pickling.
  Flowering purslane, or Great flowered purslane, the Portulaca grandiflora.  See Portulaca.
  Purslane tree, a South African shrub (Portulacaria Afra) with many small opposite fleshy obovate leaves.
  Sea purslane, a seashore plant (Arenaria peploides) with crowded opposite fleshy leaves.
  Water purslane, an aquatic plant (Ludwiqia palustris) but slightly resembling purslane.
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  Portulaca oleracea
       n : weedy trailing mat-forming herb with bright yellow flowers
           cultivated for its edible mildly acid leaves eaten raw or
           cooked especially in Indian and Greek and Middle Eastern
           cuisine; cosmopolitan [syn: common purslane, pussley,
            pusly, verdolagas]