The term 'Night Before Christmas' is a reference to the poem 'A Visit from St. Nicholas' by Clement Clarke Moore, which is also known as 'The Night Before Christmas.' The poem was first published anonymously in 1823 and has since become a beloved holiday classic. The crossword solution for the term 'Night Before Christmas' is EVE, which is a reference to the biblical figure of the same name who is traditionally regarded as the first woman created by God.