sand·wort /ˈsæn(d)ˌwɚ/
 蚤綴屬植物
 Sand·wort n. Bot. Any plant of the genus Arenaria, low, tufted herbs (order Caryophyllaceae.)
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 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