A snicker is a small laugh or smile that you try not to show.
When you hear something embarrassing or ridiculous, it's easy to snicker. You might even catch yourself doing it if someone says something silly in front of you. Some people can't help but snicker at a funny joke or a goofy cartoon character. But remember, a snicker is usually something that happens quickly and quietly - you don't go around laughing loudly with a big smile on your face!
A stifled or broken laugh.
To emit a snicker, a stifled or broken laugh.
