This is the 12806th most frequent Portuguese word.
vermelha
"Vermelha" means "red" in English.
The word "vermelha" is used as an adjective to describe the color of the apple, agreeing in gender with the feminine noun "maçã."
A maçã é vermelha.
The apple is red.
Here, "vermelha" functions as an adjective modifying the noun "camisa," which is feminine, hence its ending to agree in gender.
Ela comprou uma camisa vermelha.
She bought a red shirt.
In this sentence, "vermelha" describes the noun "flor," showing agreement in gender with the feminine noun it modifies.