Source : Webster's Revised Unabridged Dictionary (1913)

Covercle \Cov"er*cle\ (k?v"?r-k'l), n. [OF. covercle, F.
   couvercle, fr. L. co["o]perculum fr. co["o]perire. See
   {cover}]
   A small cover; a lid. [>Obs.] --Sir T. Browne.