What is the meaning of Plea?

An appeal, petition, urgent prayer or entreaty.

An excuse; an apology.

That which is alleged or pleaded, in defense or in justification.

That which is alleged by a party in support of his cause.

An allegation of fact in a cause, as distinguished from a demurrer.

The defendant’s answer to the plaintiff’s declaration and demand.

A cause in court; a lawsuit; as, the Court of Common Pleas.

To plead; to argue.

Source: wiktionary.org