A trial or test; doing something experimentally or as a try to see the result.
新商品の試しに小さなサンプルを配った。
They distributed small samples to try the new product.
この本は試し読みができるので、まず一章読んでみてください。
You can read a sample of this book, so please read the first chapter first.
試しにその方法を使ってみたが、うまくいった。
I tried that method as an experiment, and it worked well.