"Yes, I eat lunch."
Translation:Ja, ik eet middageten.
No, it isn't. "Middageten" is the main meal, eaten at noon. In a time when nearly everybody would normally eat the main meal at noon, no word was needed to indicate specifically that this was the main meal. "Lunch" was borrowed from English to indicate a meal at noon that is not the main meal. Nowadays, that's the norm, but Dutch never got around to a word of its own for that specific type of meal.