Definition of mull

• n. - A thin, soft kind of muslin.
• n. - A promontory; as, the Mull of Cantyre.
• n. - A snuffbox made of the small end of a horn.
• n. - Dirt; rubbish.
• v. t. - To powder; to pulverize.
• v. i. - To work (over) mentally; to cogitate; to ruminate; -- usually with over; as, to mull over a thought or a problem.
• n. - An inferior kind of madder prepared from the smaller roots or the peelings and refuse of the larger.
• v. t. - To heat, sweeten, and enrich with spices; as, to mull wine.
• v. t. - To dispirit or deaden; to dull or blunt.