Source : Webster's Revised Unabridged Dictionary (1913)

Sandwort \Sand"wort`\, n. (Bot.)
   Any plant of the genus {Arenaria}, low, tufted herbs (order
   {Caryophyllace[ae]}.)

Source : WordNet®

sandwort
     n 1: loosely matted plant with mosslike foliage studded with tiny
          starry 4-petaled white blossoms; mountains of central
          and southern Europe [syn: {Moehringia mucosa}]
     2: low-growing herb having clusters of small white-flowers
        4-petaled flowers [syn: {Moehringia lateriflora}]
     3: low-growing chiefly perennial plants usually with small
        white flowers suitable for e.g. rock gardens