Triptych

1. n. A picture or altarpiece in three compartments.
2. n. Anything in three parts or leaves.
3. n. A writing tablet in three parts, two of which fold over on the middle part.

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.