Chinese — 2 found

Mandarin: ㄊㄨㄥ (tōng)
Cantonese: ['tung1']
Definition: to go through; to know well; (suffix) expert; to connect; to communicate; open; to clear; classifier for letters, telegrams, phone calls etc

Mandarin: ㄊㄨㄥˋ (tòng)
Cantonese: ['tung1']
Definition: classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)

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Japanese — 1 found

Kana:つう
Romaji:tsuu
Definition: authority, expert, connoisseur, well-informed person; counter for messages, letters, notes, documents, etc.; understanding (esp. of male-female relations), tact, insight; supernatural powers, magical powers

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Korean — 1 found

Hangul:
Romanized:tong
Definition: number of emails/written letters (counter)

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Vietnamese — 1 found

Quốc ngữ: thông
Definition: to go over or through (to); to run through; to travel through; to cross; to clear off; to unchoke; to unclog; to be in succession; to be non-stop; to be on end; to understand (thoroughly) and accept; to understand and agree to; to be familiar with; to master; to be fluent or conversant in; (archaic) to be sufficient; to be enough; (slang) to buttfuck; to have anal sex; Short for thông phán (""secretary"").; Short for thông ngôn (""interpreter"").; (Central Vietnam) good; skilled

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Characters — 1 found

traffic, pass through, avenue, commute, counter for letters, notes, documents, etc., common, communicate
Readings
Mandarin: ㄊㄨㄥ (tōng), ㄊㄨㄥˋ (tòng)
Cantonese: tung1
Japanese: ツウ (tsuu)、 ツ (tsu)、 トウ (tou) / とお.る (tooru)、 とお.り (toori)、 -とお.り (-toori)、 -どお.り (-doori)、 とお.す (toosu)、 とお.し (tooshi)、 -どお.し (-dooshi)、 かよ.う (kayou)
Korean: 통 (tong)
Vietnamese: thông

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Try looking up 通 on MDBG

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