| Answer | Crossword Clue |
|---|---|
| rachis | the part of the shaft of a feather bearing the web |
| rhachis | the part of the shaft of a feather bearing the web |
| rachial | the part of the shaft of a feather bearing the web |
| rachides | the part of the shaft of a feather bearing the web |
| rhachides | The shaft of a feather, esp. the part bearing the barbs |
| calamus | The hollow lower part of the shaft of a feather, which lacks barbs; a quill |
