What is the meaning of Ơ?

The twenty-ninth letter of the Jarai alphabet, written in the Latin script.

The 19th letter of the Vietnamese alphabet, preceded by Ô and followed by P, and representing /ɤ/.

The name of the Latin-script letter Ơ/ơ.

The name of the Latin-script letter E/e.

uh, um (space filler in a conversation, expression of hesitation or pause in speech)

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Source: wiktionary.org