This is the 418th most frequent Persian word.
برق
Electricity; lightning.
In this sentence, 'برق' refers to electricity used in houses or businesses.
برق خانه قطع شده است.
The electricity at home is cut off.
Here, 'برق' denotes the natural phenomenon of lightning.
برق آذرخش در آسمان دیده شد.
The lightning in the sky was seen.
In this context, 'برق' is used metaphorically to describe the sparkling or shining quality of someone's eyes.