Making chirping noises.
In a good mood; happy and energetic.
An electronic device which uses a piezoelectric transducer to make chirping noise, often designed to be hidden and function as an annoyance
Specifically, a version of the above designed to be thrown for placement. Similar to a throwie.
Crazy, insane.
A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats.