sliding pond

Etymology
One suggestion is that the term in its meaning of "children's slide" derives from the literal meaning by extension. Another is that it derives from or the earlier form : note the common pronunciation of  in  as.

Noun

 * 1)  A frozen pond on which people skate.
 * 2)  An area of the ground or flooring made very smooth so people may slide.
 * 3)  A slide object onto which children climb and down which they slide.