The Collaborative International Dictionary of English v.0.48:

Patena \Pat"e*na\, n. [LL.] (Eccl.)
   A paten.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Patena \Pa*te"na\, n. [Cf. Pg. patena a paten.]
   A grassy expanse in the hill region of Ceylon.
   [1913 Webster]