Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- verb idiomatic To
disclose information to thepublic or toappropriate authorities concerning theillegal orsocially harmful actions of a person or group, especially acorporation orgovernment agency . - verb team sports To make a piercing sound which
signals areferee 's action or the end of a game.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
When used idiomatically, probably an allusion to a police officer blowing his or her whistle on observing a violation of the law.
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Examples
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