(anatomy) Relating to that part of the columella of the ear which, in some animals, connects the stapes with the other parts of the columella.

(mathematics) A group such that every injective cellular automaton with the group elements as its cells is also surjective.

Sexual arousal arising from deformed, mentally impaired, or physically impaired partners.

(sports) A tap on the groin given from one (male) athlete to another, to check if the other is wearing a cup by hitting them lightly in the testicles.