1) Enclose in a hollow 2) Enclose in a recess 3) Shelter in a cove 4) Shut in an inlet 5) Surround or envelop 6) Surround with water 7) To form into a bay 
• (v. t.) To bathe; to soothe or lull as by bathing. • (v. t.) To shut in, or shelter, as in a bay.
Em·bay' transitive verb [ Prefix em- + bay to bathe.] To bathe; to soothe or lull as by bathing. [ Obsolete] Spenser. 
to enclose in or as if in a bay; surround or envelop. · to form into a bay.