(n): the greatest amount of something that is possible or allowed
(n): the period of greatest prosperity or productivity
(n): an amount of time
(n): the highest level or degree attainable; the highest stage of development
(n): a specific identifiable position in a continuum or series or especially in a process
(n): the top or extreme point of something (usually a mountain or hill)
(n): a point located with respect to surface features of some region
(n): a V shape
(n): a shape that curves or bulges outward
(n): the highest point (of something)
(n): the point located farthest from the middle of something
(n): a brim that projects to the front to shade the eyes
(n): a circular projection that sticks outward from the crown of a hat
(v): to reach the highest point; attain maximum intensity, activity
(v): reach a destination, either real or abstract
Contronymic in the sense: height of strength vs. sap, enervate.