empty space

As he was reading he found that his eyes drifted to the blank spaces.

end and beginning

As I closed the book I sensed that a face turned from me to drift toward another reader.

everything and nothing

The words of my book nothing, the drift of it everything.

—Walt Whitman, "Shut Not Your Doors," Leaves of Grass (1865)

line, angle, speed & show factor

You could watch his line 'drift' as he headed into the turn.

meditative means

Meditation that doesn’t drift, meditation that directs and apprehends.

semantic drift

Poetry is the wind behind semantic drift.