(1):

(n.) A picture by Vandyke. Also, a Vandyke collar, or a Vandyke edge.

(2):

(a.) Of or pertaining to the style of Vandyke the painter; used or represented by Vandyke.

(3):

(v. t.) fit or furnish with a Vandyke; to form with points or scallops like a Vandyke.