In English university Clay puts out a gum tree (10)
I believe the answer is:
eucalyptus
'a gum tree' is the definition.
(eucalyptus is a kind of gum tree)
'in english university clay puts out' is the wordplay.
'in english' becomes 'e' (abbreviation. I am not sure about the 'in' bit.).
'university' becomes 'u' (abbreviation for university).
'out' is an anagram indicator (out can mean wrong or inaccurate).
'clay'+'puts'='clayputs'
'clayputs' anagrammed gives 'calyptus'.
'e'+'u'+'calyptus'='EUCALYPTUS'
Can you help me to learn more?
(Other definitions for eucalyptus that I've seen before include "Australasian tree" , "Evergreen tree" , "Australian tree yielding gum and oil" .)