This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Made from birch wood.

adj. Of or relating to birch.

Of or pertaining to birch; consisting or made of birch: as, “birchen brooms,”

adj. consisting of or made of wood of the birch tree

"Down nearly to the ground the pole was dressed with birchen boughs, and others of the liveliest green, and some with silvery leaves, fastened by ribbons that fluttered in fantastic knots of twenty different colors, but no sad ones."

woody