Source : Webster's Revised Unabridged Dictionary (1913)

Serried \Ser"ried\, a. [See {Serry}.]
   Crowded; compact; dense; pressed together.

         Nor seemed it to relax their serried files. --Milton.

Serry \Ser"ry\, v. t. [imp. & p. p. {Serried}; p. pr. & vb. n.
   {Serrying}.] [F. serrer, LL. serrare, serare, from L. sera a
   bar, bolt; akin to serere to join or bind together. See
   {Serries}.]
   To crowd; to press together.

   Note: [Now perhaps only in the form serried, p. p. or a.]

Source : WordNet®

serried
     adj : (especially of rows as of troops or mountains) pressed
           together; "in serried ranks"