Source : Webster's Revised Unabridged Dictionary (1913)

Grout \Grout\, v. t. [imp. & p. p. {Grouted}; p. pr. & vb. n.
   {Grouting}.]
   To fill up or finish with grout, as the joints between
   stones.

Grouting \Grout"ing\, n.
   The process of filling in or finishing with grout; also, the
   grout thus filled in. --Gwilt.