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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  Sea chick·weed Bot. A fleshy plant (Arenaria peploides) growing in large tufts in the sands of the northern Atlantic seacoast; -- called also sea sandwort, and sea purslane.
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  Arenaria peploides
       n : perennial succulent herb with small solitary axillary or
           terminal flowers [syn: seabeach sandwort]