ơ

Letter

 * 1) The 19th letter of the Vietnamese alphabet, preceded by Ô and followed by P, and representing /ɤ/.
 * 2) * level tone: ơ
 * 3) * high rising: ớ
 * 4) * low: ờ
 * 5) * dipping-rising: ở
 * 6) * high rising glottalized: ỡ
 * 7) * low glottalized: ợ

Noun

 * "O" tròn như quả trứng gà "Ô" thời/thì đội mũ, "ơ" thời/thì mang râu
 * "O" is round like an egg "Ô" wears a hat, and "ơ" has a beard
 * "O" is round like an egg "Ô" wears a hat, and "ơ" has a beard

Etymology 2
Borrowed from.