[v] notify, usually in advance; "I warned you that I would ask some difficult questions"
[v] ask to go away; "The old man warned the children off his property"
[v] notify of danger, potential harm, or risk; "The director warned him that he might be fired"; "you will get hungry if you don't eat," he warned; "The doctor warned me about the dangers of smoking"
[v] admonish or counsel in terms of someone's behavior; "I warned him not to go too far";"I warn you against false assumptions"; "She warned him to be quiet"