oneword™ is a simple writing exercise.
It’s not about learning new words.
It’s not about defining words.

If the word of the day is: pen, don’t write:
“a writing utensil that dispenses ink”
or
“OMG!—i don’t know what that word means, i’m SO freaking out…”

Write whatever that particular word inspires:
“my uncle was in the state penitentiary for penetrating pensive pentecostals…”

The purpose of this exercise is to learn to flow.

Imagine a film camera:

When a film is shot, the camera just rolls and captures everything—good and bad. When the filming is complete, the raw film is then edited into
a cohesive piece.

The camera operator doesn’t keep stopping the camera and rewinding and editing on the fly—the camera just rolls. If it were to stop, some of the best performances and spontaneous moments might be missed.