“dine” – English explanatory dictionary

verb to have dinner (formal.) □ to dine out to have dinner away from home. [ wine

(din), v. i. [imp. & p. p. Dined (dind); p. pr. & vb. n. Dining.] [F. dîner, OF. disner, LL. disnare, contr. fr. an assumed disjunare; dis- + an assumed junare (OF. juner) to fast, for L. jejunare, fr. jejunus fasting. See Jejune, and cf. Dinner, Djeuner.] To eat the principal regular meal of the day; to take dinner. “Now can I break my fast, dine, sup, and sleep.” Shak. To dine with Duke Humphrey, to go without dinner; — a phrase common in Elizabethan literature, said to be from the practice of the poor gentry, who beguiled the dinner hour by a promenade near the tomb of Humphrey, Duke of Gloucester, in Old Saint Paul’s.

v. t. 1. To give a dinner to; to furnish with the chief meal; to feed; as to dine a hundred men. “A table massive enough to have dined Johnnie Armstrong and his merry men.” Sir W. Scott.
2. To dine upon; to have to eat. [Obs.] ´What will ye dine.´ Chaucer.