pressure point

Short definition from Wiktionary

Noun

1. 1
   A point, spot where pressure is applied: A specific small area of the body sensitive to and suitable for therapeutic pressure.
2. 2
   A point, spot where pressure is applied: A specific small area of the body targeted, due to a cluster of nerves being close to the skin, usually not protected by bone.
3. 3
   A point, spot where pressure is applied: A situation that, when addressed, can cause a change to occur.