Word with history or hygiene (4)
I believe the answer is:
oral
'word with history or hygiene' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oral that I've seen before include "Type of exam" , "By word of mouth, say exam" , "Vocal test" , "Related to the mouth" , "Exam using speech" .)