"To cry" in this sense means "to beg for." If you beg for the moon, you're wanting something way out of your reach and impossible to get.
The idiom "to cry for the moon" means to desire something that is impossible or unrealistic to attain. It suggests longing for something that is beyond reach, like crying for the unreachable moon.
To ask for something you have no chance of getting.
cry for the moon
cry unclemonkey's uncle
Some examples of idioms in "To Kill a Mockingbird" by Harper Lee include "bought the farm" meaning to die, "cry over spilt milk" meaning to regret something that has already happened, and "barking up the wrong tree" meaning to pursue the wrong course of action.
explain
Idioms are hard to understand unless you already know the meaning.
The Dark Cry of the Moon was created in 1986.
The Dark Cry of the Moon has 191 pages.
Moon Phrases or Idioms (http://dictionary.reference.com/browse/idiom) are phrases that refer to the moon, but use the reference in the way that other words are used in Idiomatic speech. Check this link for some common Moon Idioms and expressions that you may already know. http://home.hiwaay.net/~krcool/Astro/moon/moonwords/index.htm Some other idioms you may know are listed here: http://www.idiomsite.com/
fertile land
Wolves Cry Under the Moon was created in 1997.
The duration of Wolves Cry Under the Moon is 2.02 hours.
The meaning of the idiom dead certainty is absolutely or definitely