The term 'The Night Before Christmas' is a poem written by Clement Clarke Moore in 1823. The two crossword solutions for this term are 'Twas' and 'EVE'. 'Twas' is an archaic contraction of 'it was' and 'EVE' is the name of the first woman in the Bible. Together, these two words form the opening line of the poem, 'Twas the night before Christmas, when all through the house, not a creature was stirring, not even a mouse.'