Bocca

• (n.) The round hole in the furnace of a glass manufactory through which the fused glass is taken out.
Found on http://thinkexist.com/dictionary/meaning/bocca/

Bocca

Boc'ca noun [ Italian , mouth.] The round hole in the furnace of a glass manufactory through which the fused glass is taken out. Craig.
Found on http://www.encyclo.co.uk/webster/B/73
No exact match found