Classical Arabic

Qaws

The singular is qaws قوس, the dual is qawsaan/qawsayn قوسان/قوسين and the plural is aqwaas أقواس .

parenthesis, quotation mark?

Punctuation and ornaments

Only the Arabic comma is used in regular Arabic typing, which can also be substituted with the normal comma used in Latin-based scripts at U+002c.

U+060C ،: "ARABIC COMMA"

U+060D ؍: "ARABIC DATE SEPARATOR"

U+060E ؎: "ARABIC POETIC VERSE BEGIN"

U+060F ؏: "ARABIC SIGN MISRA"

U+066D ٭: "ARABIC FIVE POINTED STAR"

U+06DD ۝: "ARABIC END OF AYAH"

U+06DE ۞: "ARABIC START OF RUB EL HIZB"

U+06E9 ۩: "ARABIC ARABIC PLACE OF SAJDAH"

U+FD3E ﴾: "ARABIC ORNATE LEFT PARENTHESIS"

U+FD3F ﴿: "ARABIC ORNATE RIGHT PARENTHESIS"

http://en.wikipedia.org/wiki/Arabic_characters_in_Unicode