Webster's Revised Unabridged Dictionary · 1913

Accustom

Accustom ({not transcribed}) , transitive verb

[Old French acostumer, acustumer, French accoutumer; à (Latin ad) + Old French costume, French coutume, custom. See Custom.]

To make familiar by use; to habituate, familiarize, or inure; -- with to.
I shall always fear that he who accustoms himself to fraud in little things, wants only opportunity to practice it in greater. — Adventurer

Accustom , intransitive verb

1.
To be wont. [Obsolete] — Carew
2.
To cohabit. [Obsolete]
We with the best men accustom openly; you with the basest commit private adulteries. — Milton

Accustom , noun

Custom. [Obsolete] — Milton