Given instruction along certain lines? (7)
I believe the answer is:
trained
'given instruction' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps you can see an association between them that I don't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for trained that I've seen before include "Taught (to do a job)" , "Instructed - took aim" , "Worked out" , "Taught (a skill)" , "ran along track" .)