A mordant. Obsolete. rare.

Originally: a substance used as a mordant for dyes (now rare except as passing into sense 14a). In later use: a substance used as a binder for lake…

The bark of the East Indian shrub, Symplocos racemosa, used in dyeing. Also lodh-bark.

Dyeing. A substance which combines with a dye that has low affinity for a particular textile fibre, enabling it to become firmly fixed in the fibre.

= mordant, n. 3a. rare.

a mordant consisting of a solution of tin in acid, as tin-liquor.

a solution of tin in strong acid mixed with common salt, used as a mordant in dyeing.

That which serves to set or fix; spec. a preparation used to fix colours, or charcoal or crayon drawings.

= tin-liquor n.

A preparation for ‘striking’ or fixing a dye; a mordant.