The Collaborative International Dictionary
Embattail
Embattail \Em*bat"tail\, v. t. [See Embattle.] To furnish with battlements; to fortify as with battlements.
To embattail and to wall about thy cause
With iron-worded proof.
--Tennyson.
Wiktionary
embattail
vb. (label en archaic transitive) To furnish with battlements; to fortify as if with battlements.