splitter

One that splits.

A device that splits an electrical line into two lines.

One who or that which splits: as, a rail-splitter; also, an implement used in splitting.

One who splits hairs; one who makes too fine distinctions, as in argument, classification, etc.: in natural history, opposed to lumper. See the quotation under lumper, 3.

A kind of rich short-cake baked in irons like waffles, and then split and buttered.

One who, or that which, splits.

A person or a thing that splits.

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

In baseball, a splitfinger fastball (a type of pitch).