splitter

A person or a thing that splits.

A wedge used to cut logs down the middle.

A quarry worker who splits slate into sheets.

Colloquial A scientist in one of various fields who prefers to split categories such as species or dialects up into smaller groups.

Ball games, Baseball, Games, Hobbies, Lifestyle, Sports A split-finger fastball.

Computing, Engineering, Graphical user interface, Mathematics, Natural sciences, Physical sciences, Sciences A draggable vertical or horizontal bar used to adjust the relative sizes of two adjacent windows.

US A wheaten cake split and buttered when hot.

One who splits hairs in argument, etc.

A device with two electrical plugs that plugs into an electrical outlet, effectively converting the electrical outlet into two; socket converter.

Geometry, Mathematics, Sciences A line segment through one of the vertices of a triangle that bisects the perimeter of the triangle.