Virginia takes in the fourth test (4)
I believe the answer is:
viva
'test' is the definition.
(I've seen this before)
'virginia takes in the fourth' is the wordplay.
'virginia' becomes 'va' (US state abbreviation).
'takes in' indicates putting letters inside.
'the fourth' becomes 'iv'.
'va' enclosing 'iv' is 'VIVA'.
(Other definitions for viva that I've seen before include "test" , "academic exam!" , "Oral examination" , "Long live! - oral exam" , "Hail to the Spaniards" .)