| Answer | Crossword Clue |
|---|---|
| FLAP | Feature on the back of some pajamas |
| EYE | Feature atop the pyramid on the back of a dollar bill |
| SPARETIRECOVER | Item on the back of some sport utility vehicles |
| zygosphene | a median process on the front part of the neural arch of the vertebrae of most snakes and some lizards, which fits into a fossa, called the zygantrum, on the back part of the arch in front |
| zygosphenes | ZYGOSPHENE, a median process on the front part of the neural arch of the vertebrae of most snakes and some lizards, which fits into a fossa, called the zygantrum, on the back part of the arch in front |
| DELTAWING | Swept-back feature of some aircraft |
