unwedgeable

As a noun terms

is .

As an adjective unwedgeable is

that cannot be split, as with a wedge.

As a noun wedge

is one of the simple machines; a piece of material, such as metal or wood, thick at one edge and tapered to a thin edge at the other for insertion in a narrow crevice, used for splitting, tightening, securing, or levering () or wedge can be (uk|cambridge university|slang) the person whose name stands lowest on the list of the classical tripos.

As a verb wedge

is to support or secure using a wedge.

As an adjective unwedgeable is

that cannot be split, as with a wedge.

As a proper noun split

is a port city in croatia.

As an adjective unwedgeable is

that cannot be split, as with a wedge.