Waiting period
（重定向自Elimination period）
A waiting period is the period of time between when an action is requested or mandated and when it occurs.
In the United States, the term is commonly used in reference to gun control, as some U.S. states require a person to wait for a set number of days after buying or reserving a firearm from a dealer before actually taking possession of it. This waiting period allows the state to perform a background check to confirm that the purchaser is legally permitted to possess a firearm.