Noun

(en noun)

A particular way of phrasing an idea.

A colloquialism or idiom.

A facial appearance usually associated with an emotion.

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=9 citation , passage=Eustace gaped at him in amazement. When his urbanity dropped away from him, as now, he had an innocence of expression which was almost infantile. It was as if the world had never touched him at all.}}

(mathematics) An arrangement of symbols denoting values, operations performed on them, and grouping symbols.

(biology) The process of translating a gene into a protein.

(programming) A piece of code in a high-level language that returns a value.

Of a mother, the process of expressing milk.

Noun

(en noun)

A grievance, problem, difficulty, or concern; the act of complaining.

I have no complaints about the quality of his work, but I don't enjoy his company.

(legal) In a civil action, the first pleading of the plaintiff setting out the facts on which the claim is based;
The purpose is to give notice to the adversary of the nature and basis of the claim asserted.

(legal) In criminal law, the preliminary charge or accusation made by one person against another to the appropriate court or officer, usually a magistrate.
However, court proceedings, such as a trial, cannot be instituted until an indictment or information has been handed down against the defendant.

A consumer complaint.

A bodily disorder or disease; the symptom of such a disorder.

Don't come too close, I've got this nasty complaint .