noun

1. GAUGE, a measuring instrument for measuring and indicating a quantity such as the thickness of wire or the amount of rain etc.
2. GAUGE, diameter of a tube or gun barrel
3. GAUGE, the thickness of wire
4. GAUGE, the distance between the rails of a railway or between the wheels of a train
5. GAUGE, accepted or approved instance or example of a quantity or quality against which others are judged or measured or compared
6. GAUGE, an instrument that is used for measuring something
7. GAUGE, something that can be used to measure or judge something else
8. GAUGE, the distance between the rails of a railroad

verb

1. GAUGE, mix in specific proportions
2. GAUGE, adapt to a specified measurement
3. GAUGE, measure precisely and against a standard
4. GAUGE, judge tentatively or form an estimate of (quantities or time)
5. GAUGE, determine the capacity, volume, or contents of by measurement and calculation
6. GAUGE, rub to a uniform size
7. GAUGE, to make a judgment about (something)
8. GAUGE, to measure (something) exactly

1. Home sales provide a useful way of gauging the overall state of the economy.
2. He accurately gauged the mood of the voters.
3. I was gauging her reaction to the news.