have a lash at something
have a lash at (something)
To try something, often for the first time. Primarily heard in Australia, New Zealand. A: "Do you want to try driving my car, to see how you like it?" B: "Yeah, sure, I'll have a lash at it." I don't usually like hot tea, but it's so cold out that I had a lash at it today.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have a lash at somethingAUSTRALIAN, INFORMAL
If you have a lash at something, you attempt to do it. He had been climbing for years and decided to have a lash at Everest.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012