A big thing in dentistry (5)
I believe the answer is:
molar
This might be a double definition.
'a big thing in' is the first definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?
'dentistry' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
Can you help me to learn more?
(Other definitions for molar that I've seen before include "that could be capped" , "part of the daily grind" , "Large tooth" , "Dealing with masses" , "of ivory, perhaps" .)