Webster's 1828 Dictionary
ACCROACH
v.i. 1. To hook, or draw to, as with a hook; but in this sense not used.
2. To encroach; to draw away from another. Hence in old laws to assume the exercise of royal prerogatives.
The noun accroachment, an encroachment, or attempt to exercise royal power, is rarely or never used. [See Encroach. ]
Webster's 1913 Dictionary
ACCROACH
Ac *croach ", v. t. Etym: [OE. acrochen, accrochen, to obtain, OF. acrochier, F. accrocher; à (L. ad ) + croc hook (E. crook ).]
1. To hook, or draw to one's self as with a hook. [Obs. ]
2. To usurp, as jurisdiction or royal prerogatives. They had attempted to accroach to themselves royal power. Stubbs.
ACCROACHMENT
Ac *croach "ment, n. Etym: [Cf. F. accrochement.]
Defn: An encroachment; usurpation. [Obs. ] Bailey.