Source : Webster's Revised Unabridged Dictionary (1913)

Cohere \Co*here"\, v. i. [imp. & p. p. {Cohered}; p. pr. & vb.
   n. {Cohering}.] [L. cohaerere, cohaesum; co- + haerere to
   stick, adhere. See {Aghast}, a.]
   1. To stick together; to cleave; to be united; to hold fast,
      as parts of the same mass.

            Neither knows he . . . how the solid parts of the
            body are united or cohere together.   --Locke.

   2. To be united or connected together in subordination to one
      purpose; to follow naturally and logically, as the parts
      of a discourse, or as arguments in a train of reasoning;
      to be logically consistent.

            They have been inserted where they best seemed to
            cohere.                               --Burke.

   3. To suit; to agree; to fit. [Obs.]

            Had time cohered with place, or place with wishing.
                                                  --Shak.

   Syn: To cleave; unite; adhere; stick; suit; agree; fit; be
        consistent.

Source : WordNet®

cohere
     v 1: come or be in close contact with; stick or hold together and
          resist separation; "The dress clings to her body"; "The
          label stuck to the box"; "The sushi rice grains cohere"
          [syn: {cling}, {cleave}, {adhere}, {stick}]
     2: cause to form a united, orderly, and aethestically
        consistent whole; "Religion can cohere social groups"
     3: have internal elements or parts logically connected so that
        aesthetic consistency results; "the principles by which
        societies cohere"