The Plantagenet era? (3)
I believe the answer is:
age
'era?' is the definition.
(I've seen this before)
'the plantagenet' is the wordplay.
'AGE' is hidden within the letters.
But, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for age that I've seen before include "Era; grow old" , "Very long time" , "Mature, grow in years" , "Just a number" , "Years lived so far" .)