The Collaborative International Dictionary of English v.0.48:
Enchase \En*chase"\, v. t. [imp. & p. p. Enchased; p. pr. &
vb. n. Enchasing.] [F. ench[^a]sser; pref. en- (L. in) +
ch[^a]sse box containing relics, frame, case, the same word
as caisse case. See 1st Case, and cf. Chase, Encase,
1. To incase or inclose in a border or rim; to surround with
an ornamental casing, as a gem with gold; to encircle; to
inclose; to adorn.
Enchased with a wanton ivy twine. --Spenser.
An precious stones, in studs of gold enchased,
The shaggy velvet of his buskins graced. --Mickle.
2. To chase; to ornament by embossing or engraving; as, to
enchase a watch case.
With golden letters . . . well enchased. --Spenser.
3. To delineate or describe, as by writing. [Obs.]
All which . . . for to enchase,
Him needeth sure a golden pen, I ween. --Spenser.