What does "yex" mean?

Yex: To hiccough. [Written also yox, yux.] [Obs. or Prov. Eng.] He yexeth and he speaketh through the nose. Chaucer.

Additional senses

  1. 2.A hiccough. [Written also yox, and yux.] [Obs. or Prov. Eng.] "The excessive yex." Holland.

Sources