noun
- plural of sandglass; timekeeping devices consisting of two glass bulbs connected by a narrow neck, with sand flowing from the upper bulb to the lower one to measure time
Examples
- The museum displayed several antique sandglasses used by sailors.
- She collected various sandglasses of different time intervals.
- The teacher used small sandglasses to time the students’ activities.
- Ancient sandglasses were essential tools for navigation at sea.
- The gift shop sold decorative sandglasses as souvenirs.
- These sandglasses measure intervals from one minute to one hour.