Refers to the waxing (☽) or waning (☾) crescent [[moon]].

h4. See also

* [[Crescent]]
* [[Half Moon]]
* [[Gibbous Moon]]
* [[Full Moon]] - ○ shape
* [[Starry Moon]] - when a crescent moon is hollow and stars are visible behind it

Note: This tag should only be used for the celestial body. 
Example: 
post #2294094
post #2300437

Posts like these don't fall under this tag:
post #2303367  ([[crescent hair ornament]])
post #2216416 ([[crescent earrings]] and [[crescent necklace]])
三日月 朏 みかづき 弦月 上弦月 下弦月 月牙