Sweet Nickname of Jebidiah Allardyce in Atlantis

Puzzle 10 of Fashion Throughout History Hard Pack

Question is: Sweet Nickname of Jebidiah Allardyce in Atlantis

and the answer is: COOKIE

Word Meaning:

COOKIE — (Canada, US, Philippines) A small, flat, baked good which is either crisp or soft but firm.

Definitions from Wiktionary.