n. 时漏, 砂漏, 水漏
沙漏标

[计] 沙漏标

[ noun ]
a sandglass that runs for sixty minutes
<noun.artifact>

Hourglass \Hour"glass`\, n.
An instrument for measuring time, especially the interval of
an hour. It consists of a glass vessel having two
compartments, from the uppermost of which a quantity of sand,
water, or mercury occupies an hour in running through a small
aperture unto the lower.

Note: A similar instrument measuring any other interval of
time takes its name from the interval measured; as, a
{half-hour glass}, a {half-minute glass}. A
{three-minute glass} is sometimes called an egg-glass,
from being used to time the boiling of eggs.