A putting out of possession; dispossession; ejection; disseizin. "Ouster of the freehold is effected by abatement, intrusion, disseizin, discontinuance, or deforcement." (Blackstone) Ouster le main. [Ouster + F. La main
the arm, L. Manus.
of lands out of the hands of a guardian, or out of the king's hands, or a judgement given
for that purpose.
Origin: Prob. Fr. The OF. Infin. Oster, used substantively. See Oust.
Source: Websters Vocabulary