1) Business-card paper stock 2) Cardboard 3) Composition board 4) Playing card 5) Slang for a card or ticket 1) Card 2) Millboard 
• (n.) A board on which pastry dough is rolled; a molding board. • (n.) A stiff thick kind of paper board, formed of several single sheets pasted one upon another, or of paper macerated and pressed into molds, etc.
Paste'board` noun 1. A stiff thick kind of paper board, formed of several single sheets pasted one upon another, or of paper macerated and pressed into molds, etc. 2. (Cookery) A board on which pastry dough is rolled; a molding board. 
Pasteboard is slang for a card or ticket.
[n] - stiff cardboard made by pasting together layers of paper
noun stiff cardboard made by pasting together layers of paper