1. A coded message in speech or writing that seems innocent to a general audience but has an additional, specific meaning for a targeted subgroup
   "The candidate's speech contained several dog whistles aimed at conservative voters"
    
2. A high-pitched whistle used for training dogs, typically producing sound at frequencies higher than humans can hear
   "The trainer used a dog whistle to call the dogs from a distance"

1. To use coded language that appears neutral but conveys a specific message to a particular group
   "The politician dog-whistled to his base during the debate"

Derived forms: dog whistles

Encyclopedia: Dog whistle