Wait twenty-four hours to import Spanish article (5)
I believe the answer is:
delay
'wait' is the definition.
(delaying is a kind of waiting)
'twenty-four hours to import spanish article' is the wordplay.
'twenty-four hours' becomes 'day' ('day' can be a synonym of 'twenty-four hours').
'to import' indicates putting letters inside.
'spanish article' becomes 'el'.
'day' placed around 'el' is 'DELAY'.
(Other definitions for delay that I've seen before include "Postpone, defer" , "Put off; pause" , "Stoppage" , "Hold-up, time lag" , "Put off until later" .)