un prânz - a lunch (n sg indef)
prânzul- the lunch (n sg def)
prânzuri - lunches (n pl indef)
prânzurile- the lunches (n pl def)
Un prânz sau dejun este masa principală a zilei. - A lunch or or breakfast is the main meal of the day.
"Dejun" is another word for lunch. "Micul dejun" is breakfast.
the enunciation, "enunţare' of this exercise is terrible... try as i might, i can only hear franzuri