Dine

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Middle English: from Old French disner, probably from desjëuner ‘to break fast’, from des- (expressing reversal) + jëun ‘fasting’ (from Latin jejunus ).

wiktionary

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From Middle English dynen, from Old French disner(“to dine, eat the main meal of the day”), from Vulgar Latin *disiūnāre(“to eat breakfast”), from disieiūnāre(“to break the fast”), from Late Latin, from dis- + iēiūnō(“to fast”), from Latin ieiūnus.

etymonline

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dine (v.)

c. 1300, dinen, "eat the chief meal of the day, take dinner;" also in a general sense "to eat," from Old French disner "to dine, eat, have a meal" (Modern French dîner), originally "take the first meal of the day," from stem of Gallo-Roman *desjunare "to break one's fast," from Vulgar Latin *disjejunare, from dis- "undo, do the opposite of" (see dis-) + Late Latin jejunare "to fast," from Latin iejunus "fasting, hungry, not partaking of food" (see jejune).

Transitive sense of "give a dinner to" is from late 14c. To dine out "take dinner away from home" is by 1758.