骨鯁在喉

fish bone stuck in one's throat (idiom); fig. to feel obliged to speak out candidly / sth on one's mind

bone

fish bone / bone stuck in the throat / sth one feels obliged to speak out about / candid speaker

to choke on a piece of food / (literary) a fish bone lodged in one's throat

to exist; to be alive / (of sb or sth) to be (located) at / (used before a verb to indicate an action in progress)

throat / larynx