Taw

The letter is named ''''. It is written in several ways depending on its position in the word:

Final (''fatha'', then with a sukun on it, pronounced , though diacritics are normally omitted) is used to mark feminine gender for third-person perfective/past tense verbs, while final (, ) is used to mark past-tense second-person singular masculine verbs, final (, ) to mark past-tense second-person singular feminine verbs, and final (, ) to mark past-tense first-person singular verbs. The plural form of Arabic letter is '''' (), a palindrome.

Recently, the isolated has been used online as an emoticon in the Western world, because it resembles a smiling face. Provided by Wikipedia