What is "aspidium acrostichoides"

Christmas \Christ"mas\, n. [Christ + mass.] An annual church festival (December 25) and in some States a legal holiday, in memory of the birth of Christ, often celebrated by a particular church service, and also by special gifts, greetings, and hospitality. Christmas box.

1. A box in which presents are deposited at Christmas.

2. A present or small gratuity given to young people and servants at Christmas; a Christmas gift.

   Christmas carol, a carol sung at, or suitable for, Christmas.

   Christmas day. Same as Christmas.

   Christmas eve, the evening before Christmas.

   Christmas fern (Bot.), an evergreen North American fern ( Aspidium acrostichoides), which is much used for decoration in winter.

   Christmas flower, Christmas rose, the black hellebore, a poisonous plant of the buttercup family, which in Southern Europe often produces beautiful roselike flowers midwinter.

   Christmas tree, a small evergreen tree, set up indoors, to be decorated with bonbons, presents, etc., and illuminated on Christmas eve.