Noun
A high-pitched whistle, supposedly inaudible to humans, used to train dogs.
Synonyms: silent whistle, Galton's whistle
(figuratively) That which is understood only by a narrow demographic.
(politics, sometimes derogatory) A political allusion or comment that only a certain audience is intended to note and recognize the significance of.
Synonym: codeword
Trump's lack of knowledge or experience or solutions would be bad enough. But what he's doing here is more sinister. Trump is reinforcing harmful stereotypes and offering a dog whistle to his most hateful supporters. It's a disturbing preview of what kind of President he'd be. Hillary Clinton
First there was racism. Then liberals created institutional racism and coded racism. You can only hear it with a dog whistle. Evan Sayet
It is one massive sub-tweet or dog whistle warning to anyone out there that Zuma is not going to go down alone for the mess. Source: Internet
But “love jihad” is too good a dog whistle to pass up for the lack of evidence. Source: Internet
His immigrant bashing and persistent racist dog whistle has built him a rabid and dangerous following. Source: Internet
Any mention of the removal of Corporal punishment is like a dog whistle to some… Merle eh hear anyting else after that… Source: Internet