sickle
nounAn implement having a semicircular blade attached to a short handle, used for cutting grain or tall grass.
nounThe cutting mechanism of a reaper or mower.
intransitive verbTo cut with a sickle.
intransitive verbTo deform (a red blood cell) into an abnormal crescent shape.
intransitive verbTo assume an abnormal crescent shape. Used of red blood cells.
adjectiveShaped like the blade of a sickle; crescent-shaped.
nounA reaping-hook; a curved blade of steel (anciently also of bronze) having the edge on the inner side of the curve, with a short handle or haft, for cutting with the right hand grain or grass which is grasped by the left.
nounA sickle-shaped sharp-edged spur or gaff formerly used in cock-fighting.
nounIn embryology, a crescentie thickening at the posterior edge of the blastodisc in certain vertebrate embryos with meroblastic eggs, such as the fishes and reptiles.
nounA crescentie whitish area in the choroid commonly observed in cases of myopia.
