gibbous

1. 1. Characterized by convexity; protuberant.
   2. More than half but less than fully illuminated. Used of the moon or a planet.
2. Having a hump; humpbacked.

[Middle English, bulging, from Late Latin gibbōsus, hunch-backed, from Latin gibbus, hump.]

1. Characterized by convexity; protuberant.
2. Having a hump; humpbacked.

Humped; protuberant.

The adjective has 2 meanings:

Meaning #1: characteristic of or suffering from kyphosis, an abnormality of the vertebral column
  Synonyms: crookback, crookbacked, humped, humpbacked, hunchback, hunchbacked, kyphotic

Meaning #2: (used of the moon) more than half full
  Synonym: gibbose