Ink

1. n. A pigment. See India ink, under India.
2. n. The step, or socket, in which the lower end of a millstone spindle runs.
3. n. A fluid, or a viscous material or preparation of various kinds (commonly black or colored), used in writing or printing.

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.