头昏眼花

tóu hūn yǎn huā

to faint with blurred vision (idiom); dizzy and eyes dimmed

tóu

head

hūn

old variant of 昏[hun1]

yǎn

eye (CL:隻|只[zhi1],雙|双[shuang1])

huā

variant of 花[hua1]