dingbat

noun6

1. •
   (informal) A silly, crazy or stupid person.

   • 'Midge was such a dingbat', Jenny Fields wrote in her autobiography, 'that she went to Hawaii for a vacation during World War Two.' — 1978
2. •
   A special ornamental typographical symbol, such as a bullet, an arrow, a pointing hand etc.
3. •
   A kind of word puzzle involving pictures or typography that hint at the solution.

   • This can be a dingbat, anagram, word puzzle, riddle or other quick warm-up activity and demonstrates to your students that when they come into your lessons, you get them thinking right away. — 2015
4. •
   A small device or gadget, the correct term for which is forgotten or unknown.
5. •
   An architectural style of apartment building, where the second storey overhangs an area for parking cars.
6. •
   (slang) Anything that can be thrown or swung with force against something else.