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.
whenever you feel like it if it is too tight to pull back without causing discomfort you may need to stretch the foreskin so that it will move freely back and forth over the head of the penis many children can do this at an early age and on the other hand many don t do it until they are in their teensthere is no hard and fast rulen humans the outside of the foreskin is like the skin on the shaft of the penis but the inner foreskin is a mucous membrane like the inside of the eyelid or the mouth like the eyelid the foreskin is free to move