hourglass
US /ˈaʊr.ɡlæs/
UK /ˈaʊr.ɡlæs/

1.
reloj de arena
a device for measuring time, consisting of two connected glass bulbs from which a quantity of sand takes an hour to pass
:
•
The sand slowly trickled through the hourglass.
La arena goteaba lentamente a través del reloj de arena.
•
She turned the hourglass over to start the timer.
Ella volteó el reloj de arena para iniciar el temporizador.
2.
figura de reloj de arena, forma de reloj de arena
a figure or shape that is narrow in the middle and wider at the top and bottom, resembling an hourglass
:
•
She has an hourglass figure.
Ella tiene una figura de reloj de arena.
•
The vase had an elegant hourglass shape.
El jarrón tenía una elegante forma de reloj de arena.