Definition of "wow" [wow]

• Used to express wonder, amazement, or great pleasure. (interjection)
• An outstanding success. (noun)
• To have a strong, usually pleasurable effect on: a performance that wowed the audience. (verb-transitive)
• Slow variation in the pitch of a sound reproduction resulting from variations in the speed of the recording or reproducing equipment. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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• "[Illustration] _Bow wow, wow_, says the Dog at the Door."
• "At this Instant something was heard to slap at the Window, _Wow, wow, wow_, says Jumper, and attempted to leap up and open the Door, at which the Children were surprized; but Mrs. _Margery_ knowing what it was, opened the Casement, as _Noah_ did the Window of the"