Places for learning about something old-fashioned: mythical beasts (8)
I believe the answer is:
unicorns
'beasts' is the definition.
The definition and answer can be both people as well as being plural nouns.
Maybe there's an association between them I don't understand?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for unicorns that I've seen before include "Imaginary one-horned creatures 98)" , "Imaginary horned creatures" , "Imaginary one-horned animals" , "Imaginary one-horned horses" , "Mythical creatures like single-horned horses" .)