hourglass
hour.glass \'au.(*)r-.glas\ n : an instrument for measuring time consisting of a glass vessel having two compartments from the uppermost of which a quantity of sand, water, or mercury runs in an hour into the lower one - hourglass aj
hour.glass \'au.(*)r-.glas\ n : an instrument for measuring time consisting of a glass vessel having two compartments from the uppermost of which a quantity of sand, water, or mercury runs in an hour into the lower one - hourglass aj