Or from Latin baculum a stick, because the squire would practice with a staff, not a sword. Meaning evolved from knight in training to young unmarried man (early 14c.). Bachelor party as a pre-wedding ritual is from 1882.
A transcutaneous electrical nerve stimulation (TENS) unit is a device that sends small electrical currents to targeted body parts. These currents are used to relieve pain. Some TENS units are designed for use in a hospital or healthcare facility.
Other Precautions: 1  Use caution in your daily activities. TENS may suppress the sensation of pain that your body uses to tell you when something is wrong. 2  Use TENS only for the condition for which the device is ordered. Talk to your doctor if you have any change in your condition or if a new condition develops.