n. An instrument to indicate the state of the atmosphere, especially changes of atmospheric pressure, and hence changes of weather, such as a barometer or baroscope.
the GNU version of the Collaborative International Dictionary of English
n. An instrument to indicate the state of the atmosphere, especially changes of atmospheric pressure, and hence changes of weather, as a barometer or baroscope.
The Century Dictionary and Cyclopedia
n. An instrument dessigned to indicate the state of the atmosphere.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a simple barometer for indicating changes in atmospheric pressure
Word Usage
"The still air was being stirred now by a strangely warm wind and every look at the weatherglass confirmed that the mercury shrank inside its four-foot tube."