This is the 1353rd most frequent Portuguese word.
feriado
A "feriado" is a public or holiday.
Here, 'feriado' is used as a noun referring to a day designated as a holiday due to nationwide observance.
Ontem foi feriado nacional e não houve aulas.
Yesterday was a national holiday and there were no classes.
In this sentence, 'feriado' is employed as a noun representing a period recognized as a holiday, during which typical activities (like work or school) are paused.
Durante o feriado, eu fui viajar com minha família.
During the holiday, I went traveling with my family.
Here, 'feriado' is used as a noun to describe the establishment of a day as a holiday, specifically linked to an event or occasion.