sickle['sikl]n.1.■镰刀,月牙形镰2.■[S-]【天文学】(狮子座中的)镰形星群vt.1.■用镰割:to sickle rice割稻子2.■使(红细胞)呈镰状vi.1.■呈镰刀状:the erythrocyte that sickle呈镰刀状的血红细胞adj.1.■镰状的