rugby ball       
noun [ C ] uk/ˈrʌɡ.bi ˌbɔːl/ us/ˈrʌɡ.bi ˌbɑːl/
 橄榄球
an oval shaped ball used in the sport of rugby
  I remember passing a rugby ball around with my dad and brothers. 我记得我和爸爸还有兄弟们一起传接橄榄球。 
 When I first kicked a rugby ball I had no idea which direction it would take. 第一次踢橄榄球时,我不知道它会朝哪个方向飞。 
 - More examples
- There were kids chucking a rugby ball about.
- An American football is harder than a rugby ball.
- He disappeared into their midst like a rugby ball into a scrum.