sickle
noun
°(agriculture) an implement, having a semicircular blade and short handle, used for cutting long grass and cereal crops.
verb
°(agriculture) To cut with a sickle.
°To deform (as with a red blood cell) into an abnormal crescent shape.
adjective
°Shaped like the blade of a sickle; crescent-shaped.
synonyms: reap hook, reaping hook