or lamp·work

[lamp-wur-king or lamp-wurk]
  1. the method or process of producing articles made of glass tubes or rods formed or shaped while softened by the flame of a lamp or blast lamp.

Origin of lampworking

First recorded in 1655–65; lamp + working
Related formslamp·work·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018