Coss (kŏs) noun [ Confer Pers. kōs a road measure of about two miles; or Sanskrit krōça .] A Hindoo measure of distance, varying from one and a half to two English miles. Whitworth. Found on http://www.encyclo.co.uk/webster/C/167
Coss noun [ Italian cosa .] A thing (only in phrase below). Rule of Coss , an old name for Algebra . [ Italian regola di cosa rule of thing, the unknown quantity being called the cosa , or the thing.] Found on http://www.encyclo.co.uk/webster/C/168