CLOCK WORD
The solutions from 1 to 12 are all six-letter words ending with the letter E in the centre. Moving clockwise from 1, the letters in the outer circle will spell out the name of an American jazz musician.
1. Domestic bird
2. Develop
3. Deft
4. Irritate
5. Shout of exultation
6. Eat greedily
7. Dense
8. Bureau
9. Split
10. Tiny
11. Broad street
12. Of marriageable age