spread eagle

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The figure of an eagle with wings and legs spread.
• noun The emblem on the obverse of the Great Seal of the United States.
• noun A posture or design resembling such an emblem or figure.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A position of a body involving full extension of the limbs with both fore- and hind-limbs spread wide, usually referring to humans or heraldic eagles
• noun figure skating A move in which a skater glides on both feet, the toes turned out to the sides, heels facing each other.