n.
1.a particular environment or surrounding influence
2.a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade
3.the mass of air surrounding the Earth
4.the weather or climate at some place
5.the envelope of gases surrounding any celestial body
6.a distinctive but intangible quality surrounding a person or thing
Idiom of the Day
to and fro
from one place to another and then back again, back and forth
We went to and fro between the two items as we tried to decide what to buy.