do you know Gibbous?

The waning gibbous moon of November, 62% illumination at 7:30 this morning. I got curious, what exactly does gibbous mean? The word comes from late Latin, gibbosus, meaning "hunch-backed or humped".  

Astronomically, it is used to describe a celestial body viewed from Earth that is more than half, but not entirely illuminated by the sun. Gibbous moons are convex on both edges, last quarter is approaching within a day, the moon will become crescent within about 48 hours. The moon is gibbous both waxing and waning.  So, now you know...