サブリミナルテープ

noun

subliminal tape

A cassette tape or audio recording containing subliminal messages, often marketed for self-improvement or language learning in the late 20th century. Now largely obsolete.

• 90年ねん代だいには、サブリミナルテープが自じ己こ啓けい発はつグッズとして流りゅう行こうした。

  In the 1990s, subliminal tapes were popular as self-improvement items.