Mull

1. n. An inferior kind of madder prepared from the smaller roots or the peelings and refuse of the larger.
2. n. A thin, soft kind of muslin.
3. n. A promontory; as, the Mull of Cantyre.
4. n. A snuffbox made of the small end of a horn.
5. n. Dirt; rubbish.
6. v. t. To powder; to pulverize.
7. v. i. To work (over) mentally; to cogitate; to ruminate; — usually with over; as, to mull over a thought or a problem.

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.