Sentence:  The fabric may be further described according to the number of <WSD>wales</WSD> per inch: Corduroy known as fine <WSD>wale</WSD>, pin-<WSD>wale</WSD>, or needle <WSD>wale</WSD> has very thin wales (usually twelve or more per inch, i.e., the width of a pin), while wide <WSD>wale</WSD> corduroy has thicker <WSD>wales</WSD> (usually six or fewer per inch). 
Meaning of the word marked with <WSD> tags:  A raised rib in knit goods or fabric, especially corduroy. (As opposed to course).