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War·ner (wôrnər), Harry Morris 1881-1958.
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American filmmaker who with his brothers Albert (1883-1967), Samuel Louis (1887-1927), and Jack (1892-1978) founded Warner Brothers Pictures, which produced the first talkie, The Jazz Singer (1927), and many film classics, including Casablanca (1942).

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
warn (wôrn)
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tr.v. warned, warn·ing, warns
1. To notify or make aware in advance of something, especially of possible danger or misfortune: warned boaters of the coming storm; warned me that they might be delayed.
2. To make known (a warning): warned that the bolts needed to be replaced.
3. To advise or caution (someone) about a course of action: warned us to be careful; warned us not to stay up too late.
4. To notify (a person) to go or stay away: The ranger warned hikers away from the cliff.

[Middle English warnen, from Old English warnian; see wer-4 in the Appendix of Indo-European roots.]

warner n.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.