Glass-making. [A later form of COLLET sb.1 4; the name being extended from the ‘necks’ formed in glass-blowing to all refuse and broken glass melted over again to make inferior glass.] Broken or refuse glass with which the crucibles are replenished.
1817. C. Attwood, Specif. of Patent No. 4148. Cullet, or old or broken or waste glass.
1875. Ure, Dict. Arts, II. 655. The pot is now ready for receiving the topping of cullet, which is broken pieces of window-glass to the amount of 3 or 4 cwts.
