Source : WordNet®

sink in
     v 1: become clear or enter one's consciousness or emotions; "It
          dawned on him that she had betrayed him"; "she was
          penetrated with sorrow" [syn: {click}, {get through}, {dawn},
           {come home}, {get across}, {penetrate}, {fall into
          place}]
     2: pass through; "Water permeates sand easily" [syn: {percolate},
         {permeate}, {filter}]