sickle cell sickle-billed thrasher • sickle-cell anemia · · · Info · Definitions · Synonyms · Characters · · sickle cell · · Text Common · · Latin · · Scripts 11 · · Length Definitions · · · (noun) an abnormal red blood cell that has a crescent shape and an abnormal form of hemoglobin. · · Noun Definition 1 Synonyms · · · sickle · · Synonym 1 reaping hook · · Synonym 2 reap hook · · Synonym 3 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B l latin small letter l U+006C s latin small letter s U+0073