Kanji Detail for 緘 - "seal, binding cord, letter"

緘

Non-Jōyō Kanji

Meaning
緘 means "seal, binding cord, letter."
1. Seal - To close; to shut one's mouth; to fasten.
2. Binding cord - A string for closing a box.
3. Letter - A written message.
Dictionary Citations
The meaning above is based on the following sources:

KANJIDIC2 A comprehensive Japanese-English kanji dictionary

shut; seal

Unihan Unicode Han Database for CJK characters

seal, close; bind; letter

CC-CEDICT A Chinese-English dictionary

letters; to close; to seal

Make Me a Hanzi Open-source Chinese character data

to seal, to close, to bind; a letter

XSZD Xuéshēng Zìdiǎn (學生字典) - Student's Dictionary

To seal. Such as 緘口不言 (keep silent). Now saying sealing containers is called 緘. Hence letters are called 緘.
Onyomi

kan(かん)
Kunyomi

to.jiru(とじる)
Strokes

15 strokes
Radical

糸 (ito・itohen)
Related Keywords
seal close shut mouth fasten binding cord string closing box letter written message