Stature of Harvard's capital rowing crew (6)
I believe the answer is:
height
'stature' is the definition.
(synonyms)
'harvard's capital rowing crew' is the wordplay.
'capital' says to take the initial letters.
'rowing crew' becomes 'eight' (crew of eight rowers).
The first letter of 'harvards' is 'h'.
'h'+'eight'='HEIGHT'
'of' acts as a link.
(Other definitions for height that I've seen before include "Vertical dimension" , "Crowning moment" , "part of a patient's statistics?" , "Distance above ground or sea" , "Peak" .)