Battledoor

1. n. A child’s hornbook.
2. n. An instrument, with a handle and a flat part covered with parchment or crossed with catgut, used to strike a shuttlecock in play; also, the play of battledoor and shuttlecock.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.