sick·le (s k  l)n. 1. An implement having a semicircular blade attached to a short handle, used for cutting grain or tall grass. 2. The cutting mechanism of a reaper or mower. v. sick·led, sick·ling, sick·les v.tr. 1. To cut with a sickle. 2. To deform (a red blood cell) into an abnormal crescent shape. v.intr. To assume an abnormal crescent shape. Used of red blood cells. adj. Shaped like the blade of a sickle; crescent-shaped: a sickle moon. [Middle English sikel, from Old English sicol, from Vulgar Latin sicila, from Latin s  cula; see sek- in Indo-European roots.] |
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