Sentence:  A pie-shaped <WSD>godet</WSD> (the most common one), is usually cut with straight grain down the center of the piece of fabric, leaving bias edges on the sides. 
Meaning of the word marked with <WSD> tags:  A piece of fabric inserted into a garment along a seam or cut to lengthen the free edge, and to make a garment roomier and to add a wavy edge.