hourglass
/ˈaʊəɡlɑːs/
nounA clock made of two glass vessels connected by a narrow passage through which sand flows.
“After each game turn, invert the hourglass to reset the time limit for the next player.”
A clock made of two glass vessels connected by a narrow passage through which sand flows.
“After each game turn, invert the hourglass to reset the time limit for the next player.”