1) Acrobat 2) Athlete 3) Flipper 4) Jock 5) KERRI Strug 6) Nadia Comaneci 7) Olympic competitior 8) One dismounting from a horse 9) One who works on a horse 10) One working on bars 11) Summer olympian 12) Summer Olympics performer 13) Vault expert Found on https://www.crosswordclues.com/clue/gymnast
(from the article `international relations`) ...an immediate conference with Roosevelt. The two met for three weeks at the Arcadia Conference in Washington after Dec. 22, 1941. They reaffirmed ... Found on http://www.britannica.com/eb/a-z/g/85
Gym'nast (jĭm'nȧst) noun [ Greek gymnasth`s a trainer of athletes: confer French gymnaste . See Gymnasium .] One who teaches or practices gymnastic exercises; the manager of a gymnasium; an athlete. Found on http://www.encyclo.co.uk/webster/G/70