barrel roll 横転

barrel roll は飛行機の胴体 (barrel 樽) が横転すること。1:54 and she started barrel-rolling down the slight slope. 熊はゆるい勾配をごろごろ回りながら落ちていった。

Bear gets heart attack!! Caught on camera
https://www.youtube.com/watch?v=AaA7kPfC5Hk  2:18 I saw him make the barrel rolls. and I was dumbfounded. 大型機をバレル横転させたもんだから、ビックリ仰天さ。
Boeing 707 Barrel Roll - Pilot Tex Johnston Performs Roll In Dash-80 Prototype Aircraft In 1955
https://www.youtube.com/watch?v=JTdukay9CpE  4:41 the stunt team on Casino Royal; they made into the Guinness Book of World Records after barrel-rolling Bond's Aston Martin DBS seven times.
Extreme 007: Bond Girls, Bond Cars & Roger Moore

参考リンク
http://bridge-english.blogspot.jp/2015/11/cartwheel.html  cartwheel 側転
http://bridge-english.blogspot.jp/2009/02/rotisserie.html  rotisserie