This is the 865th most frequent Hebrew word.
בחוץ
Outside.
Here, 'בחוץ' means 'outside' and indicates the location where the children are playing.
הילדים משחקים בחוץ בגינה.
The children are playing outside in the garden.
In this sentence, 'בחוץ' is used to describe the location of the weather condition.
המזג אוויר בחוץ מאוד נעים היום.
The weather outside is very pleasant today.
This usage of 'בחוץ' emphasizes the ambience and location regarding auditory observations.