The Collaborative International Dictionary of English v.0.48:

Marginate \Mar"gin*ate\, v. t.
   To furnish with a distinct margin; to margin. [R.]
   --Cockeram.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Marginate \Mar"gin*ate\, a. [L. marginatus, p. p. of marginare
   to margin. See Margin, n.]
   Having a margin distinct in appearance or structure.
   [1913 Webster]