This is the 9845th most frequent Spanish word.
barómetro
An instrument that measures atmospheric pressure.
Here, 'barómetro' refers to the scientific instrument used to measure air pressure.
El barómetro mide la presión atmosférica.
The barometer measures atmospheric pressure.
In this sentence, 'barómetro' is used metaphorically to indicate a tool or method for gauging a sentiment.
El análisis de encuestas actúa como un barómetro de la opinión pública.
The analysis of surveys acts as a barometer of public opinion.
In this context, 'barómetro' is again used metaphorically to denote an indicator or measure.