Source : Webster's Revised Unabridged Dictionary (1913)

Sickle \Sic"kle\, n. [OE. sikel, AS. sicol; akin to D. sikkel,
   G. sichel, OHG. sihhila, Dan. segel, segl, L. secula, fr.
   secare to cut; or perhaps from L. secula. See {Saw} a cutting
   instrument.]
   1. A reaping instrument consisting of a steel blade curved
      into the form of a hook, and having a handle fitted on a
      tang. The sickle has one side of the blade notched, so as
      always to sharpen with a serrated edge. Cf. {Reaping
      hook}, under {Reap}.

            When corn has once felt the sickle, it has no more
            benefit from the sunshine.            --Shak.

   2. (Astron.) A group of stars in the constellation Leo. See
      Illust. of {Leo}.

   {Sickle pod} (Bot.), a kind of rock cress ({Arabis
      Canadensis}) having very long curved pods.

Source : WordNet®

Arabis Canadensis
     n : North American rock cress having very long curved pods [syn:
          {sicklepod}]