tan-ooze

Century Dictionary and Cyclopedia

1. n. In tanning, an aqueous extract of tan-bark, as hemlock- or oak-bark or mixtures of these barks, or of other vegetable substances or mixtures of such substances with one another or with tan-bark, used in tanning. The ooze also usually contains in a suspended state the material or mixture of materials from which the water dissolves out the tannin in making the extract; and, after the more or less prolonged immersion therein of the hides or skins, the latter absorb a large proportion of the extracted tannin, and the ooze becomes somewhat shiny from animal matters. Also called tan-liquor.