All 5 Uses

focus
in
The Glass Castle
(Edited)

He focused on me, pushed his glasses up his nose, and said something that sounded like...
p. 136.5

focused = looked, or concentrated
He was focused on striking it rich.
p. 171.3

focused = concentrating
Jeannette, you're so focused it's scary.
p. 195.8

focused = paying attention to achieving goals
What he needed was someone who was focused and determined, someone who would set ultimatums and stick to them.
p. 208.8

focused = putting all attention to the important issue
When Mom told me I was so focused it was scary, I know she didn't mean it as a compliment, but I took it that way.
p. 208.9 *

focused = paying attention to achieving goals

Definitions:

(1) (focus as in: Turn your focus to question #2.)
to direct attention or effort toward a single thing; or the ability to do so without getting distracted
(2) (focus as in: The focus of our study is...)
where attention is concentrated or directed
(3) (focus as in: bring into focus; or out of focus)
a state where something has come into view or can be seen clearly; or an adjustment made to permit a clear view
(4) (focus as with technical usage)
technical usage typically involves some sense of center or concentration such as:
- physics — a point where things come together such as the point where light rays meet
- geometry — a fixed reference point (as of a parabola)
- geology — the point of origin of an earthquake
See a comprehensive dictionary for other less common meanings.
(5) (meaning too rare to warrant focus)