Cover for the Middle of a Car's Wheel
This page is the CodyCross answer for the clue below from Circus, Group 87, Puzzle 4 (Bread and Circuses).
Question is: Cover for the Middle of a Car's Wheel
and the answer is: HUBCAP
Word Meaning:
HUBCAP — A decorative and protective disk that covers the hub of a motor car wheel.
Definitions from Wiktionary.