sandglass
/ˈsændɡlæs/
noun
- A device for measuring time, consisting of two glass bulbs connected by a narrow neck, through which sand flows from the upper to the lower bulb.
- In the old library, a large sandglass sat on the desk to remind visitors of the passing hours.
- The chef used a sandglass to time the perfect three-minute egg.
- She turned the sandglass over and watched the fine grains trickle down.
Synonyms