This is the 3914th most frequent Russian word.
газу
"Газу" is the dative or accusative singular form of "газ," meaning "gas."
In this sentence, 'газу' refers to the acceleration pedal of a vehicle, urging quick action.
Дай газу, мы опаздываем!
Step on the gas, we are late!
Here, 'газу' refers to the supply of natural gas used for heating or cooking.
У меня дома закончился газ.
I ran out of gas at home.
In this context, 'газу' refers to fuel, specifically natural gas for vehicles.