This is the 10268th most frequent Russian word.
больная
"Больная" means "sick" or "ill" (feminine form) in English.
Here, 'больная' means 'sick' or 'ill' and is used to describe someone's health condition.
Она больная, ей нужен отдых.
She is sick, she needs rest.
In this example, 'больная' is used as an adjective describing the woman to indicate she is unwell.
В больнице я встретил больную женщину.
In the hospital, I met a sick woman.
Here, 'больная' is used figuratively to mean 'sensitive' or 'problematic,' referring to a topic that causes difficulty or discomfort.