1.VerbTo accept (a decision or law) and act in accordance with it; to conform to (a decision or law); to acquiesce to (a decision or law).
"I don't agree with it, but I'll abide by the decision to give the reward to her.; The defendent has abided by my ruling in good faith."
2.VerbTo remain faithful to (something or someone); to adhere to (an idea or plan).
"He may have shown his true colors, but he's supported me for years, so I'll abide by him.; She has served me loyally, abiding by my rule for almost my entire life."