weatherglass

noun
weath·​er·​glass | \ˈwe-t͟hər-ˌglas \

Definition of weatherglass 

: a simple instrument for showing changes in atmospheric pressure by the changing level of liquid in a spout connected with a closed reservoir broadly : barometer

First Known Use of weatherglass

1695, in the meaning defined above

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Time Traveler for weatherglass

The first known use of weatherglass was in 1695

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Nglish: Translation of weatherglass for Spanish Speakers

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