NOUN (1)

1. a thin mortar that can be poured and used to fill cracks in masonry or brickwork;


VERB (1)

1. bind with grout;
- Example: "grout the bathtub"

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Grout \Grout\ (grout), n. [AS. gr[=u]t; akin to grytt, G.
   gr["u]tze, griess, Icel. grautr, Lith. grudas corn, kernel,
   and E. groats.]
   1. Coarse meal; ground malt; pl. groats.
      [1913 Webster]

   2. Formerly, a kind of beer or ale. [Eng.]
      [1913 Webster]

   3. pl. Lees; dregs; grounds. [Eng.] "Grouts of tea."
      --Dickens.
      [1913 Webster]

   4. A thin, coarse mortar, used for pouring into the joints of
      masonry and brickwork; also, a finer material, used in
      finishing the best ceilings. --Gwilt.
      [1913 Webster]

WordNet (r) 3.0 (2006):

grout
    n 1: a thin mortar that can be poured and used to fill cracks in
         masonry or brickwork
    v 1: bind with grout; "grout the bathtub"