Jisho

×
1. oh! (expression of slight surprise)
Wikipedia definition
2. O (kana)In Japanese writing, the kana お and オ occupy the fifth place, between え and か, in the modern Gojūon (五十音) system of collating kana. In the Iroha, they occupy the 27th, between の and く. In the table at right (ordered by columns, from right to left), お lies in the first column (あ行, "column A") and the fifth row (お段, "row O"). Both represent [o o].
Read “O (kana)” on English Wikipedia
Read “お” on Japanese Wikipedia
Read “O (kana)” on DBpedia

Discussions

to talk about this word.