Sends for instructions (6)
I believe the answer is:
orders
This could be a double definition.
'sends' is the first definition.
The definition and answer can be both to do with communicating as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?
'instructions' is the second definition.
(I've seen this before)
'for' is the link.
Can you help me to learn more?
(Other definitions for orders that I've seen before include "Sends away for" , "Commands these priests and nuns?" , "Dictates, decrees" , "the clergy take" , "Demands" .)