Send for servant-boy (4)
I believe the answer is:
page
This clue is a double definition.
'send for' is the first definition.
(I've seen this before)
'servant-boy' is the second definition.
(I've seen this before)
(Other definitions for page that I've seen before include "Boy at wedding" , "Messenger" , "a significant bit of history?" , "Summon" , "Young attendant for part of a book" .)