what is an lac
lac - resinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax. seal, sealing wax - fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters. shellac varnish, shellac - a thin varnish made by dissolving lac in ethanol; used to finish wood. animal product - a product made from animal material.