Lyric discussion by joaquim 

Cover art for Crying Song lyrics by Pink Floyd

What is the "stone" meaning? a problem maybe, but is that means something else?

@joaquim The stone refers to the stone blocking the entrance to the tomb where Jesus was said to have been placed after the crucifixion. Surprisingly, this reference stands alone, without much connection to the rest of the lyrics. Nonetheless, it adds a lot to the song's interest.