hour‧glass /ˈaʊəɡlɑːs $ ˈaʊrɡlæs/ noun [countable]

1. a glass container for measuring time in which sand moves slowly from the top half to the bottom in exactly one hour ⇒ egg-timer

2. hourglass figure a woman who has an hourglass figure has a narrow waist in comparison with her chest and hips

[TahlilGaran] Dictionary of Contemporary English ▲