Sentence:  A shish-kebab polymer crystal usually consists of a central fibril (<WSD>shish</WSD>) and disk-shaped folded-chain lamellae (<WSD>kebab</WSD>) oriented perpendicularly to the <WSD>shish</WSD> as shown in Fig. 18.3a. 
Meaning of the word marked with <WSD> tags:  A crystal structure consisting of a central spine (the "shish") and disks or lumps growing out from it (the "kebab").