Emily Dickinson Lexicon

accustom (accustomed), v. [OFr acostume-r, see custom, n.] (webplay: familiar, habit, use).

1. Adjust; accommodate; adapt; conform; [word play on “costume”] clothe; cover; dress up; [fig.] prepare for burial; place in a coffin; wrap in a shroud.
2. Phrase. “Accustomed to”: familiar with; comfortable with; used to.