Source : WordNet®

choke off
     v 1: suppress; "He choked down his rage" [syn: {choke down}, {choke
          back}]
     2: become or cause to become obstructed; "The leaves clog our
        drains in the Fall"; "The water pipe is backed up" [syn: {clog},
         {clog up}, {back up}, {congest}, {choke}, {foul}] [ant: {unclog}]