hourglass
Plural
hourglasses
1
a glass container with two parts that measures every sixty minutes using the sand flow from the upper to the lower part
- She flipped the hourglass to start the 30-minute countdown for her cooking task.
- The hourglass on the desk was used as a timer for the study session.
- They used an hourglass during the game to keep track of turns and ensure fairness.
- The hourglass was a traditional method for measuring time before modern clocks became common.
- He watched the sand slowly flow through the hourglass as he waited for his meeting to start.