To Roll
To Tumble, To Lie Down, To Be Scattered About
intransitive verb, godan verb
You know that the kanji here means revolve. The verb version of this is similar. It means to roll or to tumble. When something is doing these things it is revolving, right?
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
You know what's really easy to roll down a hill? Bottles of Corona (ころ). Just imagine yourself rolling one bottle of Corona after another down this hill like some kind of Corona Santa.
ボールが転がる音がした。
There was a sound of a ball rolling.
毛虫なら、その辺りにたくさん転がってるでしょう。
For caterpillars, there are probably many lying down around there.
転がる石?イギリスのロックバンド「ザ・ローリング・ストーンズ」のことですか?
A rolling stone? Do you mean the English rock band The Rolling Stones?