a discharge lamp, esp. one used to produce a brightly colored light
see also discharge tube (sense 2): sometimes called glow tube
glow lamp in American English
noun
Electronics
a vacuum tube containing a gas that is ionized by the electrons, giving a visible glow
Word origin
[1880–85]This word is first recorded in the period 1880–85. Other words that entered Englishat around the same time include: Chief of Staff, highball, interface, quotation mark, regionalism