Manger visitors (4)
I believe the answer is:
magi
'manger visitors' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for magi that I've seen before include "members of priestly caste" , "Biblical wise men" , "The Three Kings" , "Christmas travellers" , "Eastern men of lore; Epiphany figures" .)