| Readings | On-reading | えい |
| Kun-reading | - | |
| Meaning | defense / protection | |
| Radical | 行 | |
| Stroke count | １６ | |
| JLPT Level | N1 | |
Stroke order of 「衛」
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Vocabulary contains 「衛」
| Word | Meaning |
| 衛星（えいせい） | satellite |
| 守衛（しゅえい） | security guard |
| 防衛（ぼうえい） | defense |
| 自衛（じえい） | self-defense |
