First-rate space for instruction (9)
I believe the answer is:
classroom
'instruction' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'first-rate space' is the wordplay.
'first-rate' becomes 'class' (I've seen this before).
'space' becomes 'room' (room is a kind of space).
'class'+'room'='CLASSROOM'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for classroom that I've seen before include "Part of a school" , "Where children learn" , "Lessons are learnt here" , "Where folk are taught" , "Teaching chamber" .)