Merriam-Webster's Collegiate® Dictionary, 11th Edition
DINE
I. verb (dined; dining)
Etymology: Middle English, from Anglo-French disner, diner to eat, have a meal, from Vulgar Latin *disjejunare to break one's fast, from Latin dis- + Late Latin jejunare to fast, from Latin jejunus fasting
Date: 13th century
intransitive verb to take dinner, transitive verb to give a dinner to ,
II. noun
Date: 15th century
dinner