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).
(comparative sicker, superlative sickest) 1  In poor health. She was sick all day with the flu. ( 2 colloquial) Mentally unstable, disturbed. ( 3 colloquial) In bad taste. That's a sick joke. 4  Having an urge to vomit. ( 5 slang) Very good, excellent, awesome. This tune is sick. 6  In poor condition.