what does slide mean?

"to revenge or to ignore" I have never heard either of those uses. Maybe it is slang. Can you clarify or use it in a sentence?

Can you use it in a sentence? I'm not sure what meanings you're seeing. It does have several meanings, but I've never seen it in relation to revenge.

To slide is to move smoothly without stopping. If someone says "I'll let you slide" that means I'll let you continue (to move past me) without stopping you (to avoid conflict). To slide through, is another way to say "come on through". Which means to be invited from where you are to me. So if I say "I'm going to fight you, and your brother will slide (for me) too!" That means not only will I fight you, I will invite your brother and he will come directly here without stopping (so he will come smoothly) to do what I am doing with me. Which is fighting you. Let it slide, can mean don't let their words/actions annoy you. Let his words/actions smoothly pass by you without them hitting you. Another way of saying "let it go" But it doesn't mean revenge at all the rest of the sentence will decide if it's revenge