trailer
The Italian term for the English word 'trailer' is 'rimorchio'. It refers to a vehicle drawn by a powered vehicle, especially a van or caravan towed by a car. It can be used in most of the same contexts as in English. However, it does not usually refer to a preview for a movie or television show as it commonly does in English.
I am under tow because of the fatigue
This phrase uses 'rimorchio' in a metaphorical sense to reflect the effect of fatigue, as if being towed along due to tiredness.
Luca went to the nightclub to do the towing
In this phrase, 'rimorchio' is used colloquially to refer to the act of flirting or picking up someone in a social setting such as a nightclub.
He is attaching the trailer to the car
Here, 'rimorchio' is used in the literal sense to refer to a trailer or tow-car attached to a car for transportation purposes.