Home HSK Vocabulary HSK 7–9 口哨 口哨 kǒu shào HSK 7–9 · C2 Meanings whistle Quick facts HSK LevelHSK 7–9 CEFRC2 ← Back to HSK 7–9 Overview Practice 口哨 with flashcards MandoBridge uses spaced repetition to help you remember HSK 7–9 vocabulary — free on iOS and Android. ← All HSK 7–9 vocabulary