This is the 5664th most frequent French word.
capouillet
"Capouillet" does not appear to be a standard French word. It may be a regional term, surname, or misspelling.
Here, 'capouillet' is describing a singular unit of the plant with emphasis on its beauty.
Regarde comme ce capouillet est magnifique !
See how magnificent this capouillet is!
The word 'capouillet' is used here as a noun to denote a plant or flower.
Le capouillet du jardin est en fleurs.
The capouillet in the garden is in bloom.
'Capouillet' is employed as a plural form, indicating multiple items of the named plant or flower species.