Texting in a theater, e.g.

• Taboo to a toddler
• Nail-biting, e.g
• Ringo Starr's "___ Song"
• Jaywalking, e.g.
• "That's a ___" (verboten)
• Taboo behavior: Hyph
• It's taboo
• Something that must not be done (informal)
• Illegality

Wikipedia Word definitions in Wikipedia
Non-POU domain-containing octamer-binding protein is a protein that in humans is encoded by the NONO gene .