Cognate with Hebrew חֵךְ (ḥēḵ), Aramaic חִכָּא / ܚܸܟܿܵܐ (ḥekkā, “palate”). See the root ح ن ك (ḥ n k) for explanation how further meanings of this root are related to the mouthpart idea.
Practice speaking and memorizing "حنك" and many other words and sentences in Arabic.