There are 2 definitions of grout in English:

grout1

Syllabification: grout
Pronunciation: /ɡrout
 
/

noun

A mortar or paste for filling crevices, especially the gaps between wall or floor tiles.
More example sentences
  • Wall and floor tile grout must be sealed to prevent damage from moisture and graffiti.
  • Tile grout is neither waterproof nor stainproof, so it usually must be sealed.
  • Tiles, grout, thinset, cement board, tools and complete installation instructions are available at most home centers and other retailers of tile supplies.

verb

[with object] Back to top  
Fill in with grout: the gaps are grouted afterward
More example sentences
  • He installed it all in one day and grouted it the next.
  • They are incorrectly grouted, there are gaps and a lot of joints filled with tile adhesive.
  • I'm hoping that by the time I get home, the office tile has been grouted, dried and the furniture put in place.

Origin

mid 17th century: perhaps from obsolete grout 'sediment', (plural) 'dregs', or related to French dialect grouter 'grout a wall'.

Definition of grout in:

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Word of the day dinkum
Pronunciation: ˈdiNGkəm
adjective
(of an article or person) genuine

There are 2 definitions of grout in English:

grout2

Syllabification: grout
Pronunciation: /ɡrout
 
/

noun

(grouts) archaic
Sediment; dregs; grounds: old women told fortunes in grouts of tea

Origin

Old English grūt, of Germanic origin; related to Dutch gruit 'dregs', German Grauss 'grain, weak beer', also to grits and groats. The original meaning was 'coarse meal, groats', also denoting the infusion of malt that was fermented to make beer, hence, in Middle English, 'sediment'.

Definition of grout in:

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Word of the day dinkum
Pronunciation: ˈdiNGkəm
adjective
(of an article or person) genuine