'Rule of Coss' definitions:
Definition of 'Rule of Coss'
From: GCIDE
- Coss \Coss\, n. [It. cosa.] A thing (only in phrase below). [1913 Webster]
- Rule of Coss, an old name for Algebra. [It. regola di cosa rule of thing, the unknown quantity being called the cosa, or the thing.] [1913 Webster]