Put up with a lecturer from the north (6)
I believe the answer is:
boreal
'the north' is the definition.
(thesaurus)
'put up with a lecturer' is the wordplay.
'put up with' becomes 'bore' (past tense of 'bear').
'lecturer' becomes 'l'.
'bore'+'a'+'l'='BOREAL'
'from' acts as a link.
(Other definitions for boreal that I've seen before include "Related to the northern lights" , "Relating to qualities associated with the north wind" .)