お

Etymology 1
.

Interjection

 * 1)  yes, alright, okay

Noun

 * 1)  a sign used in some books
 * 2)  tail, brush, train
 * 3)  hill; peak
 * 4)  fish
 * 5)  the hemp or ramie plant; thread or yarn made from fibers derived from the bark of hemp or ramie stems
 * 6)  man, male
 * 7)  cord

Prefix

 * 1)  small
 * 2)  honorific prefix to make a word polite