Definition of "whew"

whew¹

/hwjuː/

interjection
1. An expressive sound made indicating the release of one's inner tension; the release of breath; an expression of relief.
2. An expression of amazement or surprise.
  Quotations
  "...Now I must be off. Whew, it's as cold as the North Pole. Which way is the wind blowing?"
  1981, P. L. Travers, chapter 1, in Mary Poppins, revised edition
verb
third-person singular simple present whews, present participle whewing, simple past and past participle whewed
1. (UK, Scotland, dialect) To whistle with a shrill pipe, like a plover.

/hwjuː/

verb
third-person singular simple present whews, present participle whewing, simple past and past participle whewed
1. (intransitive, UK, dialect) To bustle about.