- an instrument for measuring time, consisting of two bulbs of glass joined by a narrow passage through which a quantity of sand or mercury runs in just an hour.
- having a notably slim or narrow waist, midsection, or joining segment: She has an hourglass figure.
- a device consisting of two transparent chambers linked by a narrow channel, containing a quantity of sand that takes a specified time to trickle to one chamber from the other
- well-proportioned with a small waist
