roach
1 Americannoun
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a cockroach.
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Slang. the butt of a marijuana cigarette.
noun
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a European freshwater fish, Rutilus rutilus, of the carp family.
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any of various similar fishes, as the golden shiner.
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a freshwater sunfish of the genus Lepomis, found in eastern North America.
noun
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Nautical.
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the upward curve at the foot of a square sail.
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(loosely) a convexity given to any of the edges of a sail; round.
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hair combed up from the forehead or temples in a roll or high curve.
verb (used with object)
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to clip or cut off (the mane of a horse); hog.
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to comb (hair) into a roach.
noun
noun
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a European freshwater cyprinid food fish, Rutilus rutilus , having a deep compressed body and reddish ventral and tail fins
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any of various similar fishes
noun
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short for cockroach
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slang the butt of a cannabis cigarette
noun
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the amount by which the leech of a fore-and-aft sail projects beyond an imaginary straight line between the clew and the head
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the curve at the foot of a square sail
noun
Other Word Forms
Noun Inflected Forms
Etymology
Origin of roach1
An Americanism dating to 1830–40 roach 1 for def. 1 and 1940–45 roach 1 for def. 2; shortening of cockroach
Origin of roach2
First recorded in 1275–1325; Middle English roch(e), from Old French roch(e); further origin uncertain
Origin of roach3
First recorded in 1785–95; origin uncertain; posssibly a development of roach 2 ( def. )
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
As his band moves from abstraction back into song form, his evident freedom at the drum kit—something Roach helped make possible—suggests new meaning for the lyric “I’m gonna sit at the welcome table.”
From The Wall Street Journal • Jun. 22, 2026
Roach said, among his plans, would be reopening Whiskey Pete’s.
From Los Angeles Times • Jun. 1, 2026
As LPL Financial Chief Economist Jeffrey Roach notes, the inflation report showed that real disposable personal income has been down in four of the past six months, straining consumers.
From Barron's • Apr. 30, 2026
A number of well-known actors and actresses have appeared on the show over the years, including Ioan Gruffudd, Iwan Rheon, Michael Sheen and Alexandra Roach.
From BBC • Apr. 26, 2026
“Maybe we’re going to show you secret handshakes,” the Roach says.
From "The Cruel Prince" by Holly Black
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.