splitter

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. (colloquial)
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. (US)
8. One who splits hairs in argument, etc.

الجمع splitters