Emily Dickinson Lexicon

COM-MUNE', v.i. [Fr. communier; W. cymunaw; Arm. communya. The Welsh word is by Owen considered as a compound of cy, a prefix equivalent to co and con in Latin, and ymun; ym, noting identity, and unaw, to unite. If the word is formed from cy or cum and unus, it is radically different from common. But the Latin communico accords with this word, and with common.]

1. To converse; to talk together familiarly; to impart sentiments mutually, in private or familiar discourse; followed by with before the person. And there will I meet and commune with thee. – Ex. xxv.
2. To have intercourse in contemplation or meditation. Commune with your own heart on your bed. Ps. iv.
3. To partake of the sacrament or Lord's supper; to receive the communion; a common use of the word in America, as it is in the Welsh.