This is the 5185th most frequent Arabic word.
بحة
Hoarseness.
In this sentence, 'بحة' is used to denote a temporary raspiness in the voice due to emotion.
سمعت بحة في صوته عندما كان يبكي.
I heard a raspiness in his voice when he was crying.
Here, 'بحة' metaphorically describes the crispness or sharpness of the morning's cold air.
تشعر بالصباح من خلال بحة الجو البارد.
You feel the morning through the crispness of the cold air.
The word 'بحة' here describes a characteristic of the voice, indicating a slight hoarseness.