[a. Anglo-Fr. abatement, earlier enbatement (both in Britton), f. abatre = enbatre; see ABATE v.2 and -MENT.] The action of abating in a heritage, usurpation of a tenement; intrusion, tortious entry. See ABATE v.2
1330. R. Brunne, Chron., 278. For þat mischance of Blanche mariage, For þat abatement he chalenges it þorgh right.
1528. Perkins, Profitable Booke, v. § 325. 144 (1642). If the heire of him after whose death the abatement was, recover the acre of land in which the abatement was.
1586. Hooker, Giralduss Hist. Ireland, in Holinshed, II. 83/2. After the decease of the earle James, a bastard Butler had by abatement intruded.
1717. Blount, Law Dict., Abatement (Fr.) is sometimes used for the Act of the Abator; as the Abatement of the Heir into the Land, before he has agreed with the Lord.
1865. Nichols, Britton, III. i. 3. II. 3. Intrusion is a wrongful abatement during the vacancy of the soil [Fr. intrusioun est torcenous abatement]. Ibid., III. i. 4. By reason of the abatement [Fr. pur lembatement]. Ibid., VI. ix. II. 354. Those impleaded of hamsoken, or of fresh force, or of abatement [Fr. ou de enbatement].