warn

1. (transitive) To make (someone) aware of (something impending); especially:Examples: "We waved a flag to warn the oncoming traffic about the accident."; "I phoned to warn him of the road closure."transitive

2. (transitive) To make (someone) aware of (something impending); especially:Examples: "I warned him he'd be getting a huge box of birthday presents from me."transitive

3. (transitive) To make (someone) aware of (something impending); especially:Examples: "The sheriff warned her to appear in court."; "Committee being warned these following were absent or short …"; "The people had been invited to the funeral, or warnt, by a special messenger a few days before the funeral took place."transitive

4. (transitive) To make (someone) aware of (something impending); especially:Examples: "Hark! the clock is warning ten;"; "No, not a word more, Andrew; the clock has warned for nine, and I am off."; "The clock warned, and the hands pointed to a few minutes before the hour. The preacher looked towards it. "And, as you sit here," he cried," the Old Year is dragging out its last moments and the New Year is coming up —""ambitransitiveobsoletepossiblytransitive

5. (transitive) To caution or admonish (someone) against unwise or unacceptable behaviour.Examples: "He was warned against crossing the railway tracks at night."; "Don't let me catch you running in the corridor again, I warn you."transitive

6. (chiefly with "off", "away", and similar words) To advise or order to go or stay away.Examples: "A sign warns trespassers off/away from the site."