Definition - The language the Romans spoke.
Note: It became the lingua franca of educated Europeans during the Middle Ages.

Example -
PATER noster, qui es in caelis, sanctificetur nomen tuum.
(OUR Father, who art in heaven, hallowed be Thy name.)
Adveniat regnum tuum. Fiat voluntas tua, sicut in caelo et in terra.
(Thy kingdom come. Thy will be done on earth as it is in heaven.)
Panem nostrum quotidianum da nobis hodie,
(Give us this day our daily bread)
et dimitte nobis debita nostra sicut et nos dimittimus debitoribus nostris.
(and forgive us our trespasses as we forgive those who trespass against us.)
Et ne nos inducas in tentationem, sed libera nos a malo. Amen.
(And lead us not into temptation, but deliver us from evil. Amen.)

Etymology -
The word derives from the Latin Latinus, belonging to Latium, which is the name of the region around Rome.

Oxford English Dictionary -
Its first citation is from c950 in the Lindisfarne Gospel of Matthew:
"Latinis exemplaribus, latinum bisenum."
(Lindisf. Gosp. Matt. Prol.,)

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