Sharp reprimand (7-2)
'sharp reprimand' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for talking-to that I've seen before include "Ticking-off" , "Give someone a good ....... .. as a reproof" , "Dressing-down" , "Criticism from one in authority" , "Session of criticism" .)
(Another definition for talkingto that I've seen is " lecture".)