Any of several types of internal combustion engine in which the power output is directly rotational.

(slang) To have sex.

(idiomatic) To allow one to function unhindered, or without further overbearing oversight.

On or happening at the end of the year (e.g., late December).

Energy in the form of electromagnetic radiation emitted from the Sun; especially that part of this energy that is converted into usable thermal or electrical energy by man.

Any device that makes something bigger, or makes it appear bigger. / (photography) An optical device used to make enlarged prints from a photographic negative / (rare) One who enlarges.

(physics) The sum of the potential energy and kinetic energy of a body or system

Most sophisticated or expensive / Appealing to sophisticated or discerning tastes

Try the same thing (or similar things) often enough, and, even if the general standard is poor, sometimes one will be successful.

If enough allegations are made about someone or something, then even if they are all untrue, people's opinion of the person or thing will be diminished.