people who do something while listening to the radio or watching TV
Refers to people who habitually study, work, or do other tasks with the radio or television on in the background. The term comes from the ながら (while doing) pattern.
He always studies while listening to music; he's what you'd call a 'nagarazoku'.
People who are 'nagarazoku' seem to concentrate better with a little background noise than in complete silence.
Rarely used kanji form; 乍ら is an uncommon spelling of ながら.
From ながら (while doing) + 族 (tribe, group). Coined to describe people who habitually engage in activities with background media.