packwax
/ˈpækwæks/
noun
- A type of sealing wax used to close letters or packages, often made from a mixture of wax and resin.
- He melted the packwax and dripped it onto the envelope flap.
- She bought a stick of packwax to use for her handmade invitations.
- The antique letter was sealed with red packwax and a family crest.