This is the 1994th most frequent Russian word.
трейлер
"Trailer" - a preview of a film or a mobile living unit.
The word "трейлер" in this sentence means a short preview or advertisement for a film.
Мы посмотрели трейлер нового фильма.
We watched the trailer of the new movie.
Here "трейлер" refers to a vehicle designed to be pulled by a truck, used for transporting goods.
На выходных мы увидели трейлер грузовика.
Over the weekend, we saw a truck trailer.
In this instance, "трейлер" indicates a mobile home or a camper used during camping trips.