Being very important, or key to something.
Having or containing the centre of something.
Being in the centre.
Exerting its action towards the peripheral organs.
centre
Very important; noteworthy: having importance or significance in history.
Synonym of historical: of, concerning, or in accordance with recorded history or the past generally (See usage notes.)
Old-fashioned, untouched by modernity.
Various grammatical tenses and moods specially used in retelling past events.