cor·du·roy 
(kôrdə-roi′)
(kôrdə-roi′)n.
1. A durable cut-pile fabric, usually made of cotton, with vertical ribs.
2. corduroys Pants made of corduroy.
3. A road made of logs laid down crosswise.
adj.
1. Made of a fabric with vertical ribs.
2. Made of logs laid down crosswise: a corduroy road.
tr.v. cor·du·royed, cor·du·roy·ing, cor·du·roys
To build (a road) of logs laid down crosswise.
[Probably from CORD + obsolete duroy, a coarse woolen fabric.]