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).
sick. 1  suffering from disease or illness; unwell; ill: in this sense, now rare or literary in England. 2  having nausea; about to vomit or in the act of vomiting: the predominant sense in England. 3  characteristic of or accompanying sickness: a sick expression. 4  of or for sick people: sick leave.