What is Avoidance?

Legal Definition
Eccl. law. It is when a benefice becomes vacant for want of an incumbent; and, in this sense, it is opposed to plenarty. Avoidances are in fact, as by the death of the incumbent or in law.
-- Bouviers Law Dictionary
Legal Definition
Pleading. The introductiou of new or special matter, which, admitting the premises of the opposite party, avoids or repels his conclusions. Gould on PI. c. 1 24, 42.
-- Bouviers Law Dictionary
Legal Definition
A making void or of no effort; anmilllng, cancelling; escaping or evading. In English ecclesiastical law. The term describes the condition of a benefice when it has no inchmbent. In parliamentary language, avoidance of a decision signifies evading or superseding a question, or escaping the coming to a decision upon a pending question. Holthouse. In pleading. The allegation or statement of new matter, in opposition to a former pleading, which, admitting the facts alleged in such former pleading, shows cause why they should not have their ordinary legal effect. Mahaiwe Bank v. Douglass, 31 Co.nn. 175; Cooper v, Tappan, 9 Wis. 366; Meadows v. Insurance Co., 62 Iowa, 387, 17 N. W. 600; Uri v. Hirsch (O. Ct) 123 Fed. 570.
-- Black's Law Dictionary
Legal Definition
Nullifying; rendering void.
-- Ballentine's Law Dictionary