This is the 2786th most frequent Arabic word.
راح
"راح" means "went" or "left."
In this sentence, 'راح' is used as a verb meaning 'went'.
راح إلى السوق لشراء الخضروات.
He went to the market to buy vegetables.
Here, 'راح' conveys the sense of time having passed or elapsed.
راح الوقت سريعًا.
The time went quickly.
In this context, 'راح' is used colloquially to mean 'will,' indicating a future tense for the action of resting.