Thursday Morning Riddle

I’m a name for the Queen; I’m her hat ornamental;
The wheel on the watch; an accessory dental;
For infants to poke out from mammals placental;
And Jack’s broken part from his fall accidental.

Who am I?

UPDATE: Riddle solved by Asher. See comments for answer.

2 Responses to “Thursday Morning Riddle”

  1. Asher Says:

    Crown

  2. Bill Says:

    CROWN is correct. Way to go, Asher!

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