Wiktionary
skip rope
n. The rope used in this activity. vb. (context idiomatic English) To jump over a rope, both of whose ends are held by the jumper or by two others, while the rope is moved under the jumper's feet in a continual rhythm; to play the game of jump rope or exercise by jumping rope.
WordNet
skip rope
n. a length of rope (usually with handles on each end) that is swung around while someone jumps over it [syn: jump rope, skipping rope]