| Answer | Crossword Clue |
|---|---|
| nostril | an external opening of the nose |
| nostrils | NOSTRIL, an external opening of the nose |
| nare | a nostril (an external opening of the nose) |
| nares | NARE, a nostril (an external opening of the nose) |
| spiracles | An external respiratory opening, esp. each of a number of pores on the body of an insect, or each of a pair of vestigial gill slits behind the eye of a cartilaginous fish |
| nostril | either of the two external openings of the nose for breathing |
