esˈcheatment [f. escheat v. + -ment.] Forfeiture or lapsing by escheat. 1869Blackmore Lorna D. I. xxiv. 283 On pain of a heavy fine or escheatment.1919E. MacNeill Phases Irish Hist. xi. 312 The new grants were not preceded..by..any escheatment or invalidation of the existing contract.