(ichthyology) The narrow part of a fish's body to which the caudal or tail fin is attached. Its proportions, such as the length and breadth, and attached organs, such as spines of surgeonfishes or caudal keels and finlets of Scombridae often are important in descriptions of fish species.

plural of caustic soda

Acting as a cause. / Involving, or affected by, causality. / (linguistics) Expressing a cause or causation.

(linguistics) An expression of an agent causing or forcing a patient to perform an action (or to be in a certain condition).

(folklore) A demon or witch in French folklore that drains a sleeping person's energy by night.

An informal conversation, or casual short written article, especially on a serious topic.

(medicine) A cause for an effect in a system that is not a constituent of that system, especially causes of personal health problems or death, such as poison, weapon wounds, or accident.

Caulking. / A composition of vehicle and pigment used at ambient temperatures for filling/sealing joints or junctures, that remains elastic for an extended period of time after application.

(nautical) To drive oakum into the seams of a ship's wooden deck or hull to make it watertight. / To apply caulking to joints, cracks, or a juncture of different materials. / (slang) Fuck.

Language or other descriptive system which restricts that which can be described to that which can be.