from
The Collaborative International Dictionary of English v.0.48
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.
[PJC]