WordNet (r) 3.0 (2006):

common purslane
    n 1: 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,
         pussly, verdolagas, Portulaca oleracea]