The Collaborative International Dictionary of English v.0.48:

Slik \Slik\ (sl[i^]k), a. [See Such.]
   Such. [Obs. or Scot.]
   [1913 Webster]

   Note: Used by Chaucer as of the Northern dialect.
         [1913 Webster]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SLIK
       SimpLIstic sKin interface (GTK)