瓜脐

瓜臍
guāqí
the umbilicus of a melon

CEDICT

Entry Composition

1 瓜 guā
  1. melon; gourd; squash
  2. (slang) a piece of gossip
2 脐 qí
  1. (bound form) the navel; the umbilicus
  2. (bound form) the belly flap of a crab; apron