stitch·wort (stĭch'wûrt', -wôrt') n. Any of several low-growing plants of the genus Stellaria, having opposite leaves and small, white, star-shaped flowers.
[Middle English, from Old English sticwyrt, agrimony : stice, stich (from its alleged ability to cure sharp pains in the side); see stitch + wyrt, plant; see wort1.]