Merriam-Webster's Collegiate® Dictionary, 11th Edition
LID
I. noun see: lean Date: before 12th century a movable cover for the opening of a hollow container (as a vessel or box), eyelid , the operculum in mosses, hat , something that confines, limits, or suppresses ; check , restraint , an ounce of marijuana,
II. transitive verb (lidded; lidding)
Date: 13th century
to cover or supply with a lid