cmn: shí rui

Information
has URI	http://lexvo.org/id/term/cmn/sh%C3%AD%20rui

Meaning
means	(noun) a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator litmus test, litmus
means	(noun) an erect greyish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humans Cladonia rangiferina, arctic moss, reindeer moss, reindeer lichen