waning moon

noun
1.
the moon at any time after full moon and before new moon (so called because its illuminated area is decreasing).
Also called old moon.
Compare waxing moon.
Origin
before 1000; Middle English; Old English
Examples from the web for waning moon
  • The landscape was spectral in the light of the waning moon.
  • The waning moon rose but soon disappeared behind the clouds.
  • Many felt that if the hog was killed during a shrinking or waning moon, the meat would also shrink a lot when cooked.
  • View the waning moon, winter constellations, and the city skyline.