summit (part of speech: adjective)
- During such a gale a rook may often be seen struggling to get over a row of trees, and stationary, though using his wings vigorously, suspended a little way above the topmost branches. - "Wild Life in a Southern County", Richard Jefferies.
- As he did so, and his ear came close to the ground, the boy could hear the sound of hoofs galloping at topmost speed and receding into the distance. - "The Boy With the U. S. Survey", Francis Rolt-Wheeler.
- " Boys do not know much," replied Adjidaumo, dancing lightly on the topmost bough. - "The Book of Nature Myths", Florence Holbrook.