Meaning of 'TWAS THE NIGHT BEFORE CHRISTMAS in English

'TWAS THE NIGHT BEFORE CHRISTMAS

'Twas the ˌNight Before ˈChristmas BrE AmE

an old Christmas poem by Clement Moore which is especially popular in the US. It describes ↑ Santa Claus and his visit to a family's house on Christmas Eve. The poem is often printed in newspapers and magazines at Christmas, and there are many parodies (↑ parody ) of it. It begins with the words: 'Twas the night before Christmas/And all through the house/ Not a creature was stirring,/Not even a mouse.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.