barometer noun

1 instrument that measures air pressure

ADJ. aneroid, digital | high, low | steady The barometer has been steady for three days now.

VERB + BAROMETER check, read | tap He tapped the barometer and noted where the needle was pointing.

BAROMETER + VERB rise | drop, fall

2 sth that shows the state of sth

ADJ. accurate, good, reliable, sensitive, useful Infant mortality is a highly sensitive barometer of socio-economic conditions. | political

PREP. ~ of