Beast Adam learns about (10)
I believe the answer is:
salamander
'beast' is the definition.
(salamander is a kind of beast)
'adam learns about' is the wordplay.
'about' is an anagram indicator.
'adam'+'learns'='adamlearns'
'adamlearns' is an anagram of 'SALAMANDER'.
(Other definitions for salamander that I've seen before include "Lizard-like creature" , "poker" , "Beast" , "Mythical fire lizard" , "Fiery spirit" .)