dunker

noun5

1. •
   Someone who dunks.
2. •
   A person tasked with performing or training others in slam dunks.
3. •
   A biscuit that is suitable for dunking in a cup of tea.
4. •
   Any snack food suitable for dunking in sauce.
5. •
   A kind of sonobuoy.

   • Then they drop the dunker into the water and spin it around a few times so you end up upside-down. — 2013

noun2

1. •
   One of a religious denomination whose tenets and practices are mainly those of the Baptists, but partly those of the Quakers.
2. •
   A member of the Church of the Brethren.