Mo-bil'i-ty, n.

n. [Lat. mobilitas, Fr. mobilité, Pr. mobilitat, Sp. movilidad, It. mobilità.]

1. The quality of being mobile, or removable; susceptibility of being moved, aroused, excited, &c.; as, the mobility of cork in water; the mobility of a crowd.
2. Aptitude to motion; activity; readiness to move.
3. The quality of being inconstant; fickleness.
4. That which is mobile or fickle; the mob; the populace. [Cant.]

She singled you out with her eye as commander-in-chief of the mobility. Dryden.