còi

[kɔj˨˩] 🎙 Say it

In real, traceable use. Part of the curated seed collection; community review is coming.

Sense 1

Meaning · English

(noun) whistle (device used to make a whistling sound)

Nghĩa · Tiếng Việt

device tạo ra âm thanh huýt sáo

Machine-translated — suggest a fix

Register: informal

Where it’s used: Used Toàn quốc & hải ngoại · Vietnam-wide & diaspora

Examples

Nghe tiếng còi là mọi người dừng lại.Everyone stopped when they heard the whistle.

Editorial example (contributed-collins-enriched)

Sources & notes

Imported from Wiktionary (CC BY-SA 4.0, retrieved 2026-07-29); community review pending. source ↗ Local usage: In football, “còi trọng tài” specifically means the referee’s whistle. [contributed-collins-enriched]

Sense 2

Meaning · English

(noun) horn (loud alarm, especially on a motor vehicle)

Nghĩa · Tiếng Việt

còi (phụ kiện trên xe)

Machine-translated — suggest a fix

Register: informal

Sense 3

Meaning · English

(noun) siren (device for making a sound alarm)

Nghĩa · Tiếng Việt

thiết bị báo động

Machine-translated — suggest a fix

Register: informal

Sense 4

Meaning · English

(adjective) skinny; bony

Nghĩa · Tiếng Việt

gầy; nhỏ

Machine-translated — suggest a fix

Register: informal

Common questions

What does “còi” mean?

(noun) whistle (device used to make a whistling sound)

Is “còi” formal or informal?

còi is generally informal.

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