pleadv. t.[OE. pleden, plaiden, OF. plaidier, F. plaider, fr. LL. placitare, fr. placitum. See Plea.]1. To argue in support of a claim, or in defense against the claim of another; to urge reasons for or against a thing; to attempt to persuade one by argument or supplication; to speak by way of persuasion; as, to plead for the life of a criminal; to plead with a judge or with a father.()O that one might plead for a man with God, as a man pleadeth for his neighbor! (Job xvi. 21.)2. (Law) To present an answer, by allegation of fact, to the declaration of a plaintiff; to deny the plaintiff's declaration and demand, or to allege facts which show that ought not to recover in the suit; in a less strict sense, to make an allegation of fact in a cause; to carry on the allegations of the respective parties in a cause; to carry on a suit or plea.(Blackstone. Burrill. Stephen.)3. To contend; to struggle.(Chaucer.)v. t.1. To discuss, defend, and attempt to maintain by arguments or reasons presented to a tribunal or person having uthority to determine; to argue at the bar; as, to plead a cause before a court or jury.()Every man should plead his own matter. (Sir T. More.)()2. To allege or cite in a legal plea or defense, or for repelling a demand in law; to answer to an indictment; as, to plead usury; to plead statute of limitations; to plead not guilty.(Kent.)3. To allege or adduce in proof, support, or vendication; to offer in excuse; as, the law of nations may be pleaded in favor of the rights of ambassadors.(Spenser.)I will neither plead my age nor sickness, in excuse of faults. (Dryden.)