What does agile mean?
The definition of agile
Ag”ile, a.
Etym: [F. agile, L. agilis, fr. agere to move. See Agent.]

Having the faculty of quick motion in the limbs; apt or ready to move; nimble; active; as, an agile boy; an agile tongue. Shaking it with agile hand. Cowper.

— Active; alert; nimble; brisk; lively; quick.