N8 in texting is a shortened, phonetic way of writing "Night." The "8" replaces the "ight" sound in the word.
Essentially, it's a form of textspeak where numbers are substituted for sounds or syllables, often used for brevity and speed in digital communication. Using "N8" to mean "Night" is similar to using "gr8" for "great" or "l8r" for "later." It's a casual and informal abbreviation.
