Crossword Genius

One hundred years (7)

Ross

I believe the answer is:

century

'one hundred years' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for century that I've seen before include "Period of time" , "A lot of runs!" , "One hundred years" , "Group of a hundred" , "100 years" .)

I've seen this clue in the Irish Times (Simplex), The Mirror and The Times.
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