Pepto-Bismol (or pink bismuth), specifically, is known to turn the tongue and/or stool black temporarily. This condition can persist for a few days... Q.diarrhea for 4 wks. watery and then black stools.
sick day noun [C]. âº a day for which an âemployee âreceives âpay while âabsent from âwork because of âillness. (Definition of sick day from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
Definition of dog day. 1  1a dog days plural : the period between early July and early September when the hot sultry weather of summer usually occurs b : a day in dog days : a hot sultry day. 2  2 dog days plural : a period marked by dull lack of progress the dog days following any major upheaval.