Vietnamese Etymology bóng (“ball”) + bay (“to fly”). Pronunciation (Hà Nội) IPA(key): [ʔɓawŋ͡m˧˦ ʔɓaj˧˧] (Huế) IPA(key): [ʔɓawŋ͡m˦˧˥ ʔɓaj˧˧] ~ [ʔɓɔŋ˦˧˥ ʔɓaj˧˧] (Saigon) IPA(key): [ʔɓawŋ͡m˦˥ ʔɓa(ː)j˧˧] Noun (classifier quả, trái) bóng bay a balloon Wikiwand - on Seamless Wikipedia browsing. On steroids.