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).
working day. n. 1. (Industrial Relations & HR Terms) a day on which work is done, esp for an agreed or stipulated number of hours in return for a salary or wage. 2. (Industrial Relations & HR Terms) the part of the day allocated to work: a seven-hour working day.