A forward dive performed with the legs straight together, the back arched, and the arms stretched out from the sides and then brought together over the head as the diver enters the water.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "swan dive" in a sentence
"If I drop the rope, I might as well chuck myself off the ledge and follow its free-falling arc in a terminal swan dive into the shin-deep puddle sixty-five feet below."