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.
Having a foreskin or not having one does not make anyone more or less of a man; or a bad or better lover. Both of those things are a lot more complex than just what kind of penis you have, and have little to do with anyone's genitalia. With that unpacked (as it were), let's get to those basics.