<p><strong>Noun</strong></p><ul><li>The annual festival of the Christian church commemorating the birth of Jesus: celebrated on December 25 and now generally observed as a legal holiday and, for many, an occasion for exchanging gifts.</li><li>Christmastime.</li><li>Christmastide.</li></ul><p><strong>Adjective</strong></p><ul><li>Of or relating to Christmas; made or displayed for Christmas: a Christmas movie for the whole family.</li><li>Six batches of Christmas cookies; a Christmas movie for the whole family.</li></ul>