Source : Webster's Revised Unabridged Dictionary (1913)

Cement \Ce*ment"\ (s[e^]*m[e^]nt" or s[e^]m"[e^]nt), n. [OF.
   cement, ciment, F. ciment, fr. L. caementum a rough, unhewn
   stone, pieces or chips of marble, from which mortar was made,
   contr. fr. caedimentum, fr. caedere to cut, prob. akin to
   scindere to cleave, and to E. shed, v. t.]
   1. Any substance used for making bodies adhere to each other,
      as mortar, glue, etc.

   2. A kind of calcined limestone, or a calcined mixture of
      clay and lime, for making mortar which will harden under
      water.

   3. The powder used in cementation. See {Cementation}, n., 2.

   4. Bond of union; that which unites firmly, as persons in
      friendship, or men in society. ``The cement of our love.''

   5. (Anat.) The layer of bone investing the root and neck of a
      tooth; -- called also {cementum}.

   {Hydraulic cement}. See under {Hydraulic}.

Cement \Ce*ment"\, v. t. [imp. & p. p. {Cemented}; p. pr. & vb.
   n. {Cementing}.] [Cf. F. cimenter. See {Cement}, n.]
   1. To unite or cause to adhere by means of a cement. --Bp.
      Burnet.

   2. To unite firmly or closely. --Shak.

   3. To overlay or coat with cement; as, to cement a cellar
      bottom.

Cement \Ce*ment"\, v. i.
   To become cemented or firmly united; to cohere. --S. Sharp.

Source : WordNet®

cement
     v 1: make fast as if with cement; "We cemented our friendship"
     2: cover or coat with cement
     3: bind or join with or as if with cement

cement
     n 1: concrete pavement is sometimes referred to as cement; "they
          stood on the gray cement beside the pool"
     2: a building material that is a powder made of a mixture of
        calcined limestone and clay; used with water and sand or
        gravel to make concrete and mortar
     3: something that hardens to act as adhesive material
     4: any of various materials used by dentists to fill cavities
        in teeth
     5: a specialized bony substance covering the root of a tooth
        [syn: {cementum}]