splitter

noun

1. A person or a thing that splits.
2. A wedge used to cut logs down the middle.
3. A quarry worker who splits slate into sheets.
4. A scientist in one of various fields who prefers to split categories such as species or dialects up into smaller groups.
5. A split-finger fastball.
6. A draggable vertical or horizontal bar used to adjust the relative sizes of two adjacent windows.
7. A wheaten cake split and buttered when hot.
8. One who splits hairs in argument, etc.
9. A device with two electrical plugs that plugs into an electrical outlet, effectively converting the electrical outlet into two; socket converter.
10. A line segment through one of the vertices of a triangle that bisects the perimeter of the triangle.