grout

1 of 2

noun

ˈgrau̇t 

1

a

: thin mortar used for filling spaces (such as the joints in masonry)

also : any of various other materials (such as a mixture of cement and water or chemicals that solidify) used for a similar purpose

b

: plaster

2

: lees

grout

2 of 2

verb

grouted; grouting; grouts

transitive verb

1

: to fill up or finish with grout

2

: to fix in place by means of grout

grout a bolt into a wall

grouter noun

Examples of grout in a Sentence

Verb

I need to grout the bathroom tiles.

Recent Examples on the Web

Noun

Scrub dirty grout Grout is notorious for trapping dirt and discoloration, and laundry detergent can help loosen the buildup. —Ryan Brennan, Fort Worth Star-Telegram, 14 May 2026

Aggressive grout scrubbing is another well-meaning habit that backfires. —Lauren Jarvis-Gibson, Miami Herald, 12 May 2026

Verb

Some grout cleaners need time to activate, such as this Zep tile and grout cleaner. —Bestreviews, Chicago Tribune, 10 Mar. 2026

Its high temperatures and effective steam can tackle numerous projects and places, from walls and grout to sticky residue and electronic accessories. —Rae Ford, Martha Stewart, 19 Feb. 2026

Word History

Etymology

Noun

Middle English grut, grout "crushed grain for malt, infused malt, thick, dark ale, mud, slime," going back to Old English grūt "coarse meal, dregs, spent malt after brewing," going back to Germanic *grūta- (whence also Middle Dutch grute, gruut "herb mixture used in beer brewing," Middle High German grūz "a grain, grain of sand"), lengthened zero grade noun derivative from *greutan- "to grind, crush" — more at grit entry 1

Note: Sense 1, which first appears in the seventeenth century, is of uncertain relation to the earlier senses and perhaps of independent origin. Oxford English Dictionary, first edition, suggests a connection to Middle French (Limousin) grouter "to rough-cast," Limousin Occitan greutā, but this isolated word, itself of unknown origin, is of unlikely relevance.

Verb

derivative of grout entry 1

First Known Use

Noun

1638, in the meaning defined at sense 1a

Verb

1838, in the meaning defined at sense 1

Rhymes for grout

• bout
• clout
• doubt
• drought
• flout
• gout
• kraut
• lout
• out
• pout
• rout
• scout