death rattle 
noun
A gurgling sound sometimes heard in a dying person’s throat.He laughed, a harsh croaking sound like the death rattle from a blood-choked throat....
- It was one of those critical moments in science when, if you listen carefully, you can hear the death rattle of long - held assumptions, as they crumble into dust.
- There was a raspy sigh that sounded more like a death rattle.
- one way or the other (or one way and another)
- onewhile
- one-woman
- one-woman show
- one-world
- one-worlder
- one-worldism
- one-year-old
- one–many
- one–one
- onfall
- on-farm
- on-field
- on file
- on fire
- on first-name terms
- onflow
- onflowing
- on foot of
- on-form
- on for young and old
- on/from every side (or on/from all sides)
- ongaonga
- onglaze
- onglet