A report or story circulated among people whose truth is uncertain; a rumor or gossip.
最近、会社で大きなリストラがあるという噂が立っている。
There's a rumor going around the company that there will be a big round of layoffs.
噂をそのまま信じないで、まず本人に確認したほうがいい。
Don't believe rumors as they are; it's better to check with the person involved first.
彼女の結婚の噂は、週末のパーティーで広まったらしい。
The rumor about her getting married seems to have spread at the weekend party.