Entry 3 senses · 2 variants Webster, 1913 Gremial · Gre·mi·al · IPA a. n. 01 a. Of or pertaining to the lap or bosom. 1. Of or pertaining to the lap or bosom.[R.] 02 n. A bosom friend. 1. A bosom friend.[Obs.] 2. 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.(Ecol.)