glow tube (noun)

1. The couple sat in front of the fireplace, mesmerized by the soft, flickering light of the glow tube.

2. The modern living room was beautifully decorated with sleek furniture and a row of glowing glow tubes embedded in the ceiling.

3. In the early 20th century, glow tubes were used in advertising signs to attract customers to local businesses.

4. The futuristic spaceship was equipped with advanced technology, including walls lined with glowing glow tubes that illuminated the entire cabin.