Glossary of Terms:
 
Tip/Ring/Sleeve
Most commonly referred to as TRS — a 1/4-inch or 1/8-inch plug or jack with three sections, one at the tip (+), one at the ring (-), and one at the sleeve (the ground connection).
Source: Yamaha

Also refered as:
  Tip/Ring/Sleeve   stereo jack   stereo plug
Related terms:
  1/4-inch jack   1/4-inch plug   1/8-inch jack   1/8-inch plug