From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( n.) The settlement of a minister over 3 congregation without their consent.

(2): ( n.) The entry of a stranger, after a particular estate or freehold is determined, before the person who holds in remainder or reversion has taken possession.

(3): ( n.) The penetrating of one rock, while in a plastic or metal state, into the cavities of another.

(4): ( n.) The act of intruding, or of forcing in; especially, the forcing (one's self) into a place without right or welcome; encroachment.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

(Lat. intrudo, I thrust upon), the unlawful appropriation or usurpation of a church benefice, i.e., if done without the co-operation of the person who, according to the canon, is entitled to the benefice. In the Church of Scotland, the General Assembly, in 1736, passed "an act against intrusion of ministers into vacant congregations;" and the reason assigned is the principle of the Church of Scotland, "that no minister shall be intruded into any church contrary to the will of the congregation .. so as none be intruded into such parishes, as they (the General Assembly) regard the glory of God and edification of the body of Christ." See Hetherington, Hist. of lhe Ch. of Scotland, 2, 218, 302.