Source : Webster's Revised Unabridged Dictionary (1913)

Inregister \In*reg"is*ter\, v. t. [imp. & p. p. {Inreristered};
   p. pr. & vb. n. {Inregistering}.] [Pref. in- in + register:
   cf. F. enregistrer. Cf. {Enregister}.]
   To register; to enter, as in a register. [R.] --Walsh.