IPA: //ʌnˈtʃoʊk//
KK: /ʌnˈtʃoʊk/
To remove a blockage or obstruction from something that is choked.
He had to unchoke the drain to let the water flow again.
Past: unchoked
Past Participle: unchoked
Unchoke → It is formed from "un-" (meaning not or opposite of) and "choke" (from Old English "cocian", meaning to strangle or suffocate). The word "unchoke" means to remove the obstruction that causes choking, effectively meaning to not choke or to relieve choking.
Think of 'not' or 'opposite' ('un-') of 'strangling' ('cocian') — that's why unchoke means to relieve choking.