What does agility mean?
The definition of agility
A*gil”i*ty, n.
Etym: [F. agilié, L. agilitas, fr. agilis.]

1 The quality of being agile; the power of moving the limbs quickly and easily; nimbleness; activity; quickness of motion; as, strength and agility of body. They . . . trust to the agility of their wit. Bacon. Wheeling with the agility of a hawk. Sir W. Scott.
2 Activity; powerful agency. [Obs.] The agility of the sun’s fiery heat. Holland.