Overhead signs? (6)
I believe the answer is:
zodiac
This could be a double definition.
'overhead' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'signs?' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for zodiac that I've seen before include "17 Across is a sign of the ......." , "astrological study" , "Collection of houses" , "Aries, Taurus etc" , "Celestial region" .)