noun
or lak·mus ˈlakməs
( -es )
Etymology: Dutch lakmoes, from Middle Dutch leecmōs, from lēken to drip (akin to Old English leccan to moisten) + mōs green vegetables, mushy foods; akin to Old English, Old Saxon, Old Frisian mōs food, Old High German muos, Old English mete food — more at leak , meat
: litmus