\Great"en\, v. t.
To make great; to aggrandize; to cause to increase in size;
to expand. [R.]
      A minister's [business] is to greaten and exalt [his
      king].                                   --Ken.

\Great"en\, v. i.
To become large; to dilate. [R.]
      My blue eyes greatening in the looking-glass. --Mrs.
                                               Browning.