Bunk

1. n. A piece of wood placed on a lumberman’s sled to sustain the end of heavy timbers.
2. n. A wooden case or box, which serves for a seat in the daytime and for a bed at night.
3. n. One of a series of berths or bed places in tiers.

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.