Refers specifically to the Japanese art of flower arrangement, often used in the context of lessons or formal displays.
See also: 生け花
My mother takes ikebana lessons every week.
Polite form of 花 (はな). Used in everyday polite speech, especially by women or when speaking to children.
What a pretty flower!
There is an ikebana arrangement displayed in the entrance.
I watered the flowers with my child.
going to the toilet (woman's euphemism); relieving oneself
Standard polite form; the most common written representation.
Polite prefix お- + 花 (flower). The ikebana sense is a specialized extension of the polite flower meaning.