[L. gremium lap, bosom.]
Of or pertaining to the lap or bosom. [R.]

Gre·mi·al
n.

1. A bosom friend. [Obs.] Fuller.

2. (Ecol.) A cloth, often adorned with gold or silver lace, placed on the bishop's lap while he sits in celebrating mass, or in ordaining priests.

Webster 1913 Dictionary edited by Patrick J. Cassidy