What is "glass blowing"

glassblowing \glass"blow*ing\, glass blowing \glass" blow*ing\n. The art and process of creating glass objects, by shaping glass when reduced by heat to a viscid state, using various manipulations with the hands, especially by inflating it by blowing through a tube. The process is used to manufacture a wide variety of useful and ornamental objects. The manufacture of simple glass objects has been automated, but complex glass objects are still made by the traditional hand processes.

n. (alternative form of glassblowing English)