In Chapter 1 of Pirkei Avot it's written:

"17. Shimon his son said: All my days have I grown up among the wise and I have not found anything better for a man than silence. Studying Torah is not the most important thing rather fulfilling it. Whoever multiplies words causes sin."

I wanted to know, an explanation, of what exactly is this silence. And if there is somewhere else that might mention this kind of silence. I mean, is it like a contemplative silence? A meditation? Or listen rather than say, implying you would say "wrong" things? Hence, sin?