From Wiktionary, the free dictionary
cái + gai + trong + mắt.
- (Hà Nội) IPA(key): [kaːj˧˦ ɣaːj˧˧ t͡ɕawŋ͡m˧˧ mat̚˧˦]
- (Huế) IPA(key): [kaːj˨˩˦ ɣaːj˧˧ ʈawŋ͡m˧˧ mak̚˦˧˥] ~ [kaːj˨˩˦ ɣaːj˧˧ ʈɔŋ˧˧ mak̚˦˧˥]
- (Saigon) IPA(key): [kaːj˦˥ ɣaːj˧˧ ʈawŋ͡m˧˧ mak̚˦˥]
cái gai trong mắt
- (figurative) thorn in the flesh; thorn in one's side