Ark of the Covenant - Bible History Online
Bible History

Naves Topical Bible Dictionary

MORTAR, 2. A cement

=>See MILL

Exodus 1:14

14. And they made their lives bitter with hard bondage, in morter, and in brick, and in all manner of service in the field: all their service, wherein they made them serve, was with rigour.

See MILL - MORTAR-2. A cement MORTAR in Naves Topical Bible (Bible History Online)