Skip a year? (4)
I believe the answer is:
leap
This clue is a double definition.
'skip' is the first definition.
(I know that skip is a more specific form of the action leap)
'a year?' is the second definition.
(leap year is a kind of year)
(Other definitions for leap that I've seen before include "as 1984 was" , "some years?" , "Pounce" , "Jump; type of year" , "Sudden surge" .)