cough head off

cough (one's) head off

To cough intensely, as from an illness. Natalie has still been coughing her head off, so I don't think the antibiotic you gave her has helped.
See also: cough, head, off
Farlex Dictionary of Idioms.

cough one's head off

Fig. to cough long and hard. (See also laugh one's head off.) I had the flu. I nearly coughed my head off for two days.
See also: cough, head, off
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • cough
  • cough (one's) head off
  • cough something up
  • cough up
  • cough out
  • sound off
  • sound off (about something)
  • sound off about something
  • cure (someone or something) of (something)
  • cure of