Priestly vestment (5)
(Other definitions for ephod that I've seen before include "One ritually assumed" , "Ritual garment" , "Old habit" , "Jewish vestment" , "Hoped (anag.)" .)
'priestly vestment' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for amice that I've seen before include "Priest's garment" , "hood" , "Wrap" , "Linen rectangle worn by priests" , "priestly garment?" .)