n. The act of plunging or immersing.n. Specifically Baptism by immersion.n. The process of brightening ornamental brass-work, usually by first “pickling” it in dilute nitric acid, next scouring it with sand and water, and afterward plunging it for an instant only in a bath consisting of pure nitric acid.n. A composition of boiled oil and grease, used in Scotland by curriers for softening leather and making it more fit for resisting dampness: in England called dubbing.n. The washing of sheep to cleanse the fleece before shearing.n. In ceramics, the process of coating a coarse clay body with enamel or slip of a fine quality by plunging the vessel into the liquid material for the coating, or of covering stoneware with a glaze.n. A mode of taking snuff by rubbing it on the teeth and gums. See to dip snuff, under dip, V. t.