sportsherald. 2 votes Vote for this answer. Another name for a wing dam is a groyne: 'River groynes (spur dykes, wing dykes, or wing dams) are often constructed nearly perpendicular to the riverbanks, beginning at a riverbank with a root and ending at the regulation line with a head.
The foreskin (also known as the prepuce) is a portion of skin on the penis that covers and protects the tip of the penis, also known as the glans. It can be a tough world for a glans -- there's abrasion from undergarments, cold winter weather and dry air.
The skin is supposed to be gently pulled back as far as it is able to go and then the inner surface is washed with water to remove accumulated oils and dead skin cells. Soap should be avoided, but if it is used, the penis needs to be thoroughly rinsed. Trapped soap under the foreskin will cause irritation.