Tips from rabbi in document of classic design (5)
I believe the answer is:
doric
'of classic design' is the definition.
'tips from rabbi in document' is the wordplay.
'tips from' says to hollow out the word (remove centre letters).
'in' is an insertion indicator.
'document' becomes 'doc'.
'rabbi' with its middle removed is 'ri'.
'ri' going inside 'doc' is 'DORIC'.
(Other definitions for doric that I've seen before include "Denoting a classic Greek style" , "In a classical Greek style of architecture" , "Type of column" , "Greek dialect" , "One classical order in architecture" .)