'Christmastide' definitions:

Definition of 'Christmastide'

(from WordNet)
noun
Period extending from Dec. 24 to Jan. 6 [syn: Christmas, Christmastide, Christmastime, Yule, Yuletide, Noel]

Definition of 'Christmastide'

From: GCIDE
  • Christmastide \Christ"mas*tide`\, n. [Christmas + tide time.] The season of Christmas. [1913 Webster]