Most commonly appears in the negative pattern 一声不吭 (yī shēng bù kēng) meaning 'without uttering a word'. As 吭 [háng] it means 'throat' and appears in 引吭高歌 (to sing at the top of one's voice).
memory
Think of the 口 (mouth) radical — 吭 is about sounds coming from the mouth/throat.
