There are multiple definitions:

1. black tea extract(English)

   • RWGE, SCFA
   • Nutrition
   • https://doi.org….1021/jf303165w

2. behind-the-ear(English)

   • refers to a speech processor
   • RONDO, CI, SSD
   • Audiology, Therapeutic approaches, Speaking / language [incl. disorders]
   • https://doi.org…000000000000653