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Jyutping hung1 coeng1
Pinyin kōng chuāng

Definitions (Wiktionary)
  1. verb, figuratively, neologism
    to be available (for dating etc.); to be on a hiatus
Examples (粵典–words.hk)
  1. Cantonese
    爱滋病毒嘅空窗期最长系三个月。
    愛滋病毒嘅空窗期最長係三個月。
    oi3 zi1 beng6 duk6 ge3 hung1 coeng1 kei4 zeoi3 coeng4 hai6 saam1 go3 jyut6.
    • The window period of HIV lasts at most three months.