1) Crushed glass 2) Glass refuse 
the term used to describe crushed glass that is suitable for recycling by glass manufacturers.
waste glass which is melted into new objects
• (v. t.) Broken glass for remelting. • (n.) A small central plane in the back of a cut gem. See Collet, 3 (b).
Broken or imperfect glass which is set aside to be returned to the furnace to make a fresh batch of molten glass. It usually constitutes about a tenth of the batch.
(from the article `industrial glass`) In addition to the mineral ingredients such as those listed above, a glass batch traditionally consists of 25 to 60 percent cullet. Cullet is crushed ...
Glass that has been crushed ready for reprocessing
Broken or imperfect glass which is set aside to be returned to the furnace to make a fresh batch of molten glass. It usually constitutes about a tenth of the batch.
Cul'let (kŭl'lĕt) noun [ From Cull , transitive verb ] Broken glass for remelting. Cul'let noun [ A dim. from French cul back.] A small central plane in the back of a cut gem. See Collet , 3 (b) . 
Cullet is broken or scrap glass which is suitable for melting down and recycling into new glass.
Crushed glass. 
broken or waste glass suitable for remelting.