Verb
(US, baseball, softball) To swing at the ball as hard as possible, with the aim of getting a home run, increasing the chance of missing the ball.
Don't swing for the fences unless it's an easy ball; be content with running part way.
(US, idiomatic) To do something extremely ambitious, especially rashly.
I'm not going to swing for the fences tomorrow, but I'm hoping my speech will be warmly received.
And I hate to see artists who are real safe. I love to see artists swing for the fences sometimes. Lee Ann Womack
My suggestion to newspapers everywhere is to give the public a reason to read them again. So here's an idea: get on a big story with widespread public appeal, devote your best resources to it, say a quiet prayer, and swing for the fences. Graydon Carter