| Definition | a hollow in the ground, a cavity, depression; undulating, depressed |
| Unicode | U+5773 |
| Cangjie | GVIS |
| Total strokes | 8 |
| Unicode radical + strokes | 土 thổ (32) + 5 strokes |
| Hán-Việt reading | ao |
| Mandarin (Pinyin) | ào āo |
| Cantonese (Jyutping) | aau1 aau3 |
| Vietnamese | ao, nhũ "ao hố" (gdhn) |