1. The pivoted or swinging bar to which the traces of a harnessed horse are fixed; a whiffletree

Derived forms: singletrees

• Christmas cactus
• Christmas cake
• Christmas card
• Christmas carol
• Christmas Day
• Christmas disease
• Christmas Eve
• Christmas factor
• Christmas fern
• Christmas flower
• Christmas gift
• Christmas green
• Christmas holly
• Christmas present
• Christmas pudding
• Christmas rose
• Christmas star
• Christmas stocking
• Christmas tree
• Christmassy
• Christmastide
• Christmastime
• Christological
• Christology
• Christoph Willibald von Gluck