Also found in: Thesaurus, Medical, Idioms, Encyclopedia.
Related to roached: roached mane

roach 1

n. pl. roach or roach·es
1. An edible freshwater cyprinid fish (Rutilus rutilus) of northern Europe.
2. Any of various similar fishes, such as some North American freshwater sunfishes.

[Middle English roche; akin to Medieval Latin rocea (attested in a source from England from around AD 1000) and Anglo-Norman roche and ultimately of unknown origin.]

roach 2

n. pl. roach·es
1. A cockroach.
2. Slang The butt of a marijuana cigarette.

roach 3

n. pl. roach·es
1. A roll of hair brushed up from the forehead or temple.
2. A hairstyle especially among certain Native American peoples in which the head is shaved except for a strip from front to back across the top.
3. Nautical
a. An outward curve in the leech of a fore-and-aft sail.
b. An inward curve in the foot of a square sail.
tr.v. roached, roach·ing, roach·es
1. To brush (hair) in a roach.
2. To shave (the mane of a horse) to a short bristle.

[Originally meaning "inward curve in a square sail," from roach and (in reference to the relatively high arch of the fish's back).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) arched convexly, as the back of certain breeds of dog, such as the whippet
[C19: from roach3 or roach (vb) to cut (a sail) into a roach]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014