A lady's umbrella is:

Solution (By Examveda Team)

The one word substitution is Parasol.

Granary: a storehouse for threshed grain.
Epitaph: a phrase or form of words written in memory of a person who has died, especially as an inscription on a tombstone.
Aviary: a large cage, building, or enclosure for keeping birds in.
Parasol: a light umbrella used to give shade from the sun.