from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. atmospheric pressure as indicated by a barometer
Sorry, no etymologies found.
Doing it at an easy gradient and accustoming oneself to the lessened barometric pressure by slow degrees, there are no such dreadful symptoms.
An approaching low pressure system in the atmosphere would make the “glass fall,” i.e, the barometric pressure gauge a column of mercury in a thin glass tube dip to a low level, appropriately marked on the barometer’s face as “stormy weather.”