What is the meaning of ي?

The thirty-fourth letter of the Acehnese alphabet, written in the Arabic script.

The twenty-eighth and last letter of the Persian alphabet, written in the Arabic script; preceded by و.

The tenth numeral symbol of the Arabic alphabet (traditional abjad order, used for list numbering), written in the Arabic script; preceded by ط (ṭ) and followed by ك (k).

bound object pronoun: me, my

The nisba suffix, an extremely productive suffix used to derive adjectives (with the meaning “related to ...”) or nouns (with the meaning “person related to ...”) from other nouns: for instance, فَنِّيّ (fanniyy, “artistic, artist”) derived from فَنّ (fann, “art”), عِرَاقِيّ (ʕirāqiyy, “Iraqi, an Iraqi”) derived from عِرَاق (ʕirāq, “Iraq”).

alternative spelling of يَا (yā)

The twenty-eighth and last letter of the Hijazi Arabic alphabet, written in the Arabic script; preceded by و (wāw).

A letter of the Old Ruthenian alphabet, written in the Arabic script.

Enclitic form of أنا (ʔana)

I, me, my

Nisba suffix turning nouns into adjectives or nouns for people related to

The twenty-ninth letter of the Kazakh alphabet, written in the Arabic script; preceded by ى.

The thirty-fourth letter of the Malay alphabet, written in the Arabic script.

The forty-first letter of the Pashto alphabet, written in the Arabic script; preceded by ۀ and followed by ې.

indicates the third person plural present form of verbs

at the end of nouns and adjectives, indicates that the word is masculine in the singular oblique case or plural direct case

used in the non-declining adjective class

The thirty-second and last letter of the Uyghur alphabet, written in the Arabic script; preceded by ئى.

The twenty-fifth letter of the Yoruba alphabet, written in the Arabic script; preceded by و.

Source: wiktionary.org