The Collaborative International Dictionary of English v.0.48:

Sicle \Si"cle\, n. [F., fr. L. silcus, Heb. shegel. See
   Shekel.]
   A shekel. [Obs.]
   [1913 Webster]

         The holy mother brought five sicles and a pair of
         turtledoves to redeem the Lamb of God.   --Jer. Taylor.
   [1913 Webster]